## Diagonals of a Parallelogram Do Now.notebook - Section 1: Do Now

Diagonals of a Parallelogram Do Now.notebook

# Theorems about Diagonals of Parallelograms

Unit 9: Proofs about Parallelograms
Lesson 8 of 10

## Big Idea: Students use prior knowledge to write formal proofs about the diagonals of a parallelogram.

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Subject(s):
Math, Geometry, Proofs, parallelogram, logic, quadrilaterals, reasoning and proof, properties of polgygons
45 minutes

### Marisa Laks

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