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3 cards from this section. Quick, good the night before a test.
Define a parallelogram.
Think about how many sides a quadrilateral has.
What are opposite angles in a parallelogram?
Consider the angles directly across from each other.
What is a property of a parallelogram?
Think about the definition of a parallelogram.
In a parallelogram, the diagonals bisect each other. True or False?
Recall the activities we did with the diagonals.
Given a quadrilateral ABCD where diagonals AC and BD intersect at point O and AO = OC, BO = OD. Prove ABCD is a parallelogram.
Check how the properties of congruent triangles affect angle relationships.
If a rhombus has one acute angle measuring 40 degrees, what are the measures of the other angles? Prove why this occurs from its properties.
Use the properties of angles in parallelograms!
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