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## High school geometry

### Course: High school geometry > Unit 3

Lesson 6: Theorems concerning quadrilateral properties- Proof: Opposite sides of a parallelogram
- Proof: Diagonals of a parallelogram
- Proof: Opposite angles of a parallelogram
- Proof: The diagonals of a kite are perpendicular
- Proof: Rhombus diagonals are perpendicular bisectors
- Proof: Rhombus area
- Prove parallelogram properties

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# Prove parallelogram properties

CCSS.Math: HSG.CO.C.11, HSG.SRT.B.5

## Problem

Stuck?

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