Does Composition with Dilation and Reflection matter?
- Author:
- Karen Rowe
Composition with Reflection and Dilation using Point A (3, 2) and B (-2, 5)
Part A: Reflect then Dilate
1. Use the reflection tool
to Reflect segment AB over the x-axis.
For segment A'B', point A', & point B', change the color to red.
2. Use the dilation tool to Dilate segment A'B' from the center point C with a scale factor of 3.
step 1: select the dilation tool 
step 2: move the cursor to point A', select
step 3: move the cursor topoint C, select
step4: an input box will appear, enter factor 3.
For segment A''B'', point A'', & point B'', change the color to green.
to Reflect segment AB over the x-axis.
For segment A'B', point A', & point B', change the color to red.
2. Use the dilation tool to Dilate segment A'B' from the center point C with a scale factor of 3.
step 1: select the dilation tool
step 2: move the cursor to point A', select
step 3: move the cursor topoint C, select
step4: an input box will appear, enter factor 3.
For segment A''B'', point A'', & point B'', change the color to green.Reflect then Dilate
Part B: Dilate then Relfect.
1. Use the dilation tool to Dilate segment A'B' from the center point C with a scale factor of 3.
step 1: select the dilation tool 
step 2: move the cursor to point A', select
step 3: move the cursor topoint C, select
step4: an input box will appear, enter factor 3.
For segment A''B'', point A'', & point B'', change the color to green.
2. Use the reflection tool to Reflect segment A'B', A', & B'. over the x-axis.
For segment A''B'', point A'', & point B'', change the color to green.
step 2: move the cursor to point A', select
step 3: move the cursor topoint C, select
step4: an input box will appear, enter factor 3.
For segment A''B'', point A'', & point B'', change the color to green.
2. Use the reflection tool to Reflect segment A'B', A', & B'. over the x-axis.
For segment A''B'', point A'', & point B'', change the color to green.Dilate then Reflect
Composition using Reflect and Dilation
Does the order matter? Why? Think of the Coordinate Rules from the Transformation Notes.