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Properties of parallelogram

Observe and find out the properties of parallelogram.
Observe and find out the properties of parallelogram.

Opposite sides - Parallelogram #1

What do you notice about the opposite sides of a parallelogram #1?

Opposite Angles - Parallelogram #2

What do you notice about the opposite angles of a parallelogram #2?

Consecutive Angles - Parallelogram #2

What do you notice about the consecutive angles of a parallelogram #2?

Diagonals - Parallelogram #3

What is special about point E in parallelogram #3? What does this tell you about the diagonals?