## Reflection: Developing a Conceptual Understanding Properties of Isosceles Triangles - Section 1: Do Now

I have created two versions of this lesson, of which I usually teach only one. See Properties of Isosceles Triangles Alternative Lesson with Dynamic Geometry Software for the alternative version. With ever increasing access to technology it might be possible to use the alternative lesson as a blended learning version, or to combine the two lessons. Let me know if you choose to do anything with these lessons.

For a more hands-on version of this lesson...
Developing a Conceptual Understanding: For a more hands-on version of this lesson...

# Properties of Isosceles Triangles

Unit 7: Proofs about Triangles
Lesson 10 of 11

## Big Idea: Students will create a graphic organizer with the properties of isosceles triangles in order to write proofs.

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Standards:
Subject(s):
Math, Geometry, Isosceles triangle, formal proof, Triangle Proofs
45 minutes

### Marisa Laks

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