standard_description: Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals.
problem_activity: Problem 1
Find the value of the side length marked
$$x$$
.
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Problem 2
Given the following right triangle, find all of the angle measures to the nearest degree.
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aligns: no