# Quadrilateral Properties: Parallelogram

- Author:
- Emma Haddad

- Topic:
- Parallelogram

## Before you start

What is a parallelogram? Be precise with your definition.

## Parallelogram

## #1

Is there a relationship between opposite sides of the parallelogram? If so, what is the relationship?

## #2

Is there a relationship between consecutive sides of the parallelogram? If so what is the relationship?

## #3

What is the relationship between opposite angles of the parallelogram?

## #4

What is the relationship between consecutive angles of the parallelogram?

## #5

Are the diagonals of the parallelogram always congruent? How do you know?

## #6

Do the diagonals of the parallelogram always bisect each other? How do you know?

## #7

Are the two diagonals always perpendicular? How do you know?

## #8

Do the diagonals always bisect the angles at the vertices? How do you know?

## #9

What would you say are the most important properties of a parallelogram? Summarize here, and include these properties on your poster.