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2nd Review Question
Article posted June 11, 2012 at 02:10 PM GMT-5 •
comment • Reads 378
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Question
Given: In triangle ABC, B=120, c=15, and a=15
Find C
Answer
30 degrees
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Article posted June 11, 2012 at 02:10 PM GMT-5 •
comment • Reads 378
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1st Review Question
Article posted June 11, 2012 at 02:06 PM GMT-5 •
comment • Reads 234
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Question
Given: Circle O with Diamter CD, AB is parrallel to CD, and arc AB=80 degrees
Find arc CA
[1] 50 [2] 60
[3] 80 [4] 100
Answer
50
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Article posted June 11, 2012 at 02:06 PM GMT-5 •
comment • Reads 234
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Trig Blog
Article posted May 27, 2012 at 09:14 PM GMT-5 •
comment • Reads 55
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Last week, we started our triginometry unit in geometry. We have been using the Sin, Cos, and Tan formulas in class and on the homework for the last few classes. The trig formulas are really interesting, because hey allow you to find a side length of a right triangle, when you only know the measures of a side and two angles. Its also cool that for eah angle measure, the ratio is always the same, no matter how big or small the triangle is. This makes finding the ratios so much easier!
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Article posted May 27, 2012 at 09:14 PM GMT-5 •
comment • Reads 55
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Circles Blog
Article posted May 21, 2012 at 07:57 PM GMT-5 •
comment • Reads 38
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Last week in geometry, we talked about, and did a lot of work with circles. We learned the formulas to find the area and circunfrance of a circle. We also learned a lot about the radius and diameter of a circle , and their special properties, and their relationships with pi. As well as learning about circles, we learned how to find the area of regular polygons, trapezoids, kites, and rhombuses. We also had a test at the end of the week. I thought it was going to be a lot harder than it actually was.
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Article posted May 21, 2012 at 07:57 PM GMT-5 •
comment • Reads 38
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Special Right Triangles
Article posted May 14, 2012 at 08:06 PM GMT-5 •
comment • Reads 31
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There are a few tricks you can use in certain right triangles to find out the lengths of all the sides if you only know the length of one side. The triangle either has to have two 45 degree angles, and a right angle; or it can have 30, 60, and 90 degree angles. In the 45, 45, 90 triangle; the hypotenuse is the length of one of the legs times the square root of two. in the 30, 60, 90; the long leg is the short leg times the square root of three, and the hypotenuse is twice the length of the short leg.
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Article posted May 14, 2012 at 08:06 PM GMT-5 •
comment • Reads 31
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Pythagorean Theorem
Article posted May 14, 2012 at 07:30 PM GMT-5 •
comment • Reads 33
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The pythagorean theorem is used to find a leg, or the hyptenuse of a right triangle, when you have the measurements of two sides. The theorem is cool, because you can use it for a lot of different purposes. Since a lot of different shapes are made up of triangles, like parallelagrams, you can use the pythagorean theorem to help you find the area or perimiter of those shapes.
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Article posted May 14, 2012 at 07:30 PM GMT-5 •
comment • Reads 33
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Radicals
Article posted May 1, 2012 at 08:14 PM GMT-5 •
comment • Reads 64
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Last week in geometry we learned about radicals. Sometimes the square roots of numbers are never ending, unrepeting decimals; so we use simplified radicals to write them instead. Radicals can sometimes take a while to simplify, but i think that once i memorize a lot of the perfect squares, it will be much easier.
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Article posted May 1, 2012 at 08:14 PM GMT-5 •
comment • Reads 64
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Reflections
Article posted May 1, 2012 at 07:53 PM GMT-5 •
comment • Reads 36
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One week in geometry we learned about reflections. Reflections are when a shape is reflected across a line. This makes the line of reflection very similar to a line of symmetry. Reflections can sometimes be difficult, because ou have to reflect each point seperately, and if you mess one up, the whole thingis wrong; although it usually easy to notice.
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Article posted May 1, 2012 at 07:53 PM GMT-5 •
comment • Reads 36
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Transformations
Article posted May 1, 2012 at 07:45 PM GMT-5 •
comment • Reads 40
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That week in geometry we learned about translations, dialations and rotatins, which are all forms of transformation. Translations are when the hape is moved, dialations are when the shape changes size, and are when the shape is rotated around one point.
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Article posted May 1, 2012 at 07:45 PM GMT-5 •
comment • Reads 40
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3/26/12
Article posted March 26, 2012 at 07:58 PM GMT-5 •
comment • Reads 54
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Last week in geometry, we learned a lot about quadrilaterals and the different properties of the different types. We also learned a lot of new theorems that have to do with the different quadrilaterals. It was interesting how a lot of the properties and characteristics of the quadrilaterals, were also theorems that we could prove.
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Article posted March 26, 2012 at 07:58 PM GMT-5 •
comment • Reads 54
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3/18/12
Article posted March 18, 2012 at 06:16 PM GMT-5 •
comment • Reads 50
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Last week in geometry we had the NWEA testing. NWEA's are always interesting, because you never really know what to expect. This year, there was only really one question that I had absolutely no idea how to do; it told me to find the area of a hemisphere. I have no idea how to find the area of a hemisphere, but I think that was the hardest question that I saw on my test.
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Article posted March 18, 2012 at 06:16 PM GMT-5 •
comment • Reads 50
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Blog 15
Article posted March 11, 2012 at 08:09 PM GMT-5 •
comment • Reads 36
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Last week in geometry we had a test. The test was on lines in triangles and stuff like that. I thought the test was a little hard, but it was mostly multiple choice, so it wasn't that bad. There were two proofs; one was a coordinate proof, and the other was an indirect proof. I like the indirect proofs a lot better than the coordinate ones. I think I did alright on the test, but I know I messed up on the coordinate proof.
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Article posted March 11, 2012 at 08:09 PM GMT-5 •
comment • Reads 36
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14th Blog
Article posted March 9, 2012 at 12:00 PM GMT-5 •
comment • Reads 36
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This week in geometry, we had a poster due. The poster was on lines in triangles, like medians, altitudes, perpendicular bisector, and angle bisector. I had median. I thought my poster was pretty good, I got all the information about medians and their concurrent point, the centroid, that I needed to. I did it on a tri-fold poster board, and I had a lot of extra room, I think that was my only problem. The most interesting fact I learned from this project, was that the center of gravity of a triangle is the centroid.
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Article posted March 9, 2012 at 12:00 PM GMT-5 •
comment • Reads 36
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Vacation Blog
Article posted March 9, 2012 at 11:53 AM GMT-5 •
comment • Reads 36
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oh no! looks like I forgot to write a blog about vacation. Well, here it is. My vacation was fun, I went snowboarding for 9 days in a row. I went to Saddleback, because that is my favorite mountain to go to. My family has a house up there that is like 20 minutes from the mountain. Snowboarding is definitely my favorite winter activity.
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Article posted March 9, 2012 at 11:53 AM GMT-5 •
comment • Reads 36
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12th blog
Article posted February 12, 2012 at 07:59 PM GMT-5 •
comment • Reads 83
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Last week in geometry we had a quiz. The quiz was on the different lines in triangles. Like, the median, perpendicular bisector, mid-segment, altitude, and the angle bisector. Some of the short-answer questions were a little bit harder than i expected, but overall I didn't think it was that bad. I think its interesting that the lines meet at the same point, except mid-segment.
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Article posted February 12, 2012 at 07:59 PM GMT-5 •
comment • Reads 83
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Scratch blog
Article posted February 6, 2012 at 05:29 PM GMT-5 •
comment (1) • Reads 336
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Here is the link to my favorite Scratch project:
http://scratch.mit.edu/projects/thebriculator/2239526
It was a good elaborate project, and it was also entertaining. It is wheel of fortune. I think it would probably be pretty hard to make a project like this on scratch.
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Article posted February 6, 2012 at 05:29 PM GMT-5 •
comment (1) • Reads 336
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9th blog
Article posted January 19, 2012 at 06:11 PM GMT-5 •
comment • Reads 71
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last week I did a lot of preparing for my midterms. I think English was the hardest class to study for, because the only thing on the exam that you could really study for was the vocab. I think I spent most of my time studying for the biology exam, because I thought that would be the hardest one, but it wasn't really that bad.
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Article posted January 19, 2012 at 06:11 PM GMT-5 •
comment • Reads 71
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8th blog
Article posted January 10, 2012 at 05:20 PM GMT-5 •
comment • Reads 86
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Last week in geometry wee had a quiz, and we went over the schedule for the midterms we are taking next week. The quiz was on my birthday, but I did pretty good on it, so it could have been worse. The quiz was mostly on proving triangles congruent while only using three pieces of information.
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Article posted January 10, 2012 at 05:20 PM GMT-5 •
comment • Reads 86
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6th and 7th blogs
Article posted December 27, 2011 at 07:29 PM GMT-5 •
comment • Reads 73
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My favorite theorem/postulate/property is the Substitution Property of Equality. I think that is the one that I use the most, and that is why it is my favorite. I wish that you could use it for things that are congruent, because that would remove two or three steps in a proof.
I think i will look over my tests and quiz's for all my class's to study for my midterms.
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Article posted December 27, 2011 at 07:29 PM GMT-5 •
comment • Reads 73
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12/12/11
Article posted December 12, 2011 at 08:03 PM GMT-5 •
comment • Reads 112
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Last week in geometry, we talked a lot about triangles, and the theorems that have to do with triangles. Like the triangle sum theorem, which says that all the measures of all the angles in any triangle must add up to 180 degrees. We also got the proof quiz back, and I wish I had done better. Maybe I should have studied harder.
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Article posted December 12, 2011 at 08:03 PM GMT-5 •
comment • Reads 112
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12/4/11
Article posted December 4, 2011 at 08:25 PM GMT-5 •
comment • Reads 106
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This week in geometry, we took a quiz. It was on proofs. It was three questions and each questions was a proof. I thought the third proof was the hardest. But that might have been because I started running out of time towards the end of the block. I hope I did okay on the quiz.
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Article posted December 4, 2011 at 08:25 PM GMT-5 •
comment • Reads 106
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11/27/11
Article posted November 27, 2011 at 06:51 PM GMT-5 •
comment • Reads 80
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Last week we had a two day school week, because of thanksgiving. In geometry, we had a binder quiz. I got a D, maybe I should stay more organized. We are also still doing proofs. I wish we didn't get any homework for the vacation, but we did in a few classes.
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Article posted November 27, 2011 at 06:51 PM GMT-5 •
comment • Reads 80
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11/20/11
Article posted November 20, 2011 at 08:05 PM GMT-5 •
comment • Reads 108
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this week in geometry, we are doing more with proofs. We are also doing a lot with parallel lines and proofs having to do with them. We are proving that lines a parallel using the converse's of the postulates and theorems our class learned last week.
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Article posted November 20, 2011 at 08:05 PM GMT-5 •
comment • Reads 108
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11/13/11
Article posted November 13, 2011 at 06:51 PM GMT-5 •
comment • Reads 107
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This week in geometry, he have been learning about proofs. I don't really like proofs, because they are a little tedious. And sometimes, all the steps you have to do just seem pointless. We have also been doing some more work with angle pairs, and parallel lines.
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Article posted November 13, 2011 at 06:51 PM GMT-5 •
comment • Reads 107
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Angle Pairs
Article posted November 7, 2011 at 07:34 PM GMT-5 •
comment • Reads 126
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Article posted November 7, 2011 at 07:34 PM GMT-5 •
comment • Reads 126
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10/12/10
Article posted October 12, 2011 at 06:12 PM GMT-5 •
comment • Reads 159
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A construction is recreating line segments, angles, and other shapes. It is also bisecting lines and angles, and making perpendicular lines. All using a compass, straight edge, and a pencil.
My favorite construction is bisecting angles, because I like the steps.
To bisect an angle; you must first have an angle, then put the point end of the compass on the vertex of the angle and draw a curve that touches both sides of the angle. Then put the point end on the point that the curve touches the ray, and draw another curve above the first curve. Do the same for the second ray, and where the second and third curves meet, draw a point. Connect the vertex with this point, and you have bisected an angle.
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Article posted October 12, 2011 at 06:12 PM GMT-5 •
comment • Reads 159
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