IM G Unit 1 Lesson 19 Cool Down
Give the most convincing explanation you can for why a=c.
IM G Unit 1 Lesson 19 Cool Down from IM Geometry by Illustrative Mathematics, https://im.kendallhunt.com/HS/students/2/1/19/index.html. Licensed under the Creative Commons Attribution 4.0 license, https://creativecommons.org/licenses/by/4.0/.