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2 cards from this section. Quick, good the night before a test.
What is a property of the diagonals in a parallelogram?
Think about triangles formed by the diagonal.
Explain why opposite angles in a parallelogram are equal.
Consider pairs of alternate angles.
What happens when a diagonal is drawn in a parallelogram?
Recall the basic definition of a parallelogram.
True or False: The diagonals of a rectangle are always equal.
Think about the properties of rectangles.
Given a parallelogram ABCD with AB = 5cm and BC = 7cm, show the area of triangles formed by the diagonal.
Calculate the full area first, then divide.
Prove that if the diagonals of quadrilateral ABCD bisect each other, it is a parallelogram.
Analyze pairs of triangles for congruency.
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