im.g.1.13.3.translate, rotate, reflect (10)
1. Mai suspects triangle ABC is congruent to triangle DEF. She thinks these steps will work to show there is a rigid transformation from ABC to DEF. * Translate by directed line segment v. * Rotate the image __ degrees counterclockwise around point D. * Reflect that image over line DE. Draw each image and determine the angle of rotation needed for these steps to take ABC to DEF.
2. Mai's first 2 steps could be combined into a single rotation. Find the center and angle of this rotation. Verify your answer by using the rotation and final step to take ABC onto DEF.
3. Describe a general procedure for finding a center of rotation.
illustrative mathematicsgeometryunit 1 (constructions)lesson 13activity 3 Translate, rotate reflecthttps://im.kendallhunt.com/HS/teachers/2/1/13/index.html Licensed under the Creative Commons Attribution 4.0 license, https://creativecommons.org/licenses/by/4.0/