Triangle Congruence Lesson 1
Create two congruent halves from one polygon and use transformations to verify that the two halves are congruent.
Begin class by having students discuss what it means for two figures to be congruent.
This activity has two distinct parts.
Michael said the he wasn't able to find a sequence of rigid motions from Triangle ABC to Triangle A'B'C'. What do you think that means? Explain your reasoning.
Elicit and use evidence of student thinking:
>Support productive struggle in learning mathematics:
CCSS, Content Standards to specific grade/standard
CCSS, Standards for Mathematical Practices
PtA, highlighted Effective Teaching Practice and/or Guiding Principle CCSS