5.5 Properties of Parallelogram - Investigation: Four Parallelogram Properties
Parallel Lines
Parallelogram Opposite Angles Conjecture
The opposite angles of a parallelogram are congruent.
Parallelogram Consecutive Angles Conjecture
The consecutive angles of a parallelogram are supplementary.
Parallelogram Opposite Sides Conjecture
The opposite sides of a parallelogram are congruent.
Parallelogram Shape
Paralellogram Diagonals Conjecture
The diagonals of a parallelogram bisect each other.