Taylor V -- Blogmeister
 Taylor's Blog This blog is for Miss Jovanovich's algebra and geometry classes to share ideas, ask questions, and reflect on what skills and topics we are studying. If we are lucky, we might even get a chance to connect with other students studying the same stuff.
 by Taylor V teacher: Tina Jovanovich

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Reflections!

Over the past few weeks we have been learning a lot about different translations with shapes. Some include dilations, rotations and relfections. Reflections can be easy depending on where you have to reflect them. To make a reflection you need 2 things, an object and a line of reflection. Your object is your pre image and your line of reflection is any line on the coordinate grid. It's easy when you have a line of y=x, y= -x or the x or y axis. With those, I like to use matrices or the rules that wee took down in our notes. For example, across the y axis, the coordinate of your image would be (-x, y). However, if it is not one of these easy lines, like say y =3x+3, you need to follow a different set of directions. It's quite simple. All you need to do is draw a line with the opposite slope, in this case -1/3, from each of the points. From there mark on a ruler the distane on that line from your point to the line of reflection, mark the same distance on that line in the opposite direction. This will be the point of your prime endpoint of your image. Like if you were relfecting point A from the image, you would end up with A prime.

Article posted April 15, 2012 at 06:44 PM • comment • Reads 34 • see all articles