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11.02 Properties of parallelograms

Interactive practice questions

Find the value of $x$x in the parallelogram below.

A parallelogram with its two angles labeled. The angle in the lower left is marked as 65 degrees, indicating its measure. The angle in the upper left is labeled with 'x' degrees, indicating its unknown measure. Each opposite pair of sides have matching arrowheads, indicating they are parallel.

Enter each line of work as an equation.

Easy
< 1min

Find the value of $x$x in the parallelogram below.

Easy
< 1min

Find the value of $x$x in the parallelogram below.

Easy
< 1min

What is the value of $x$x in the parallelogram below?

Easy
< 1min
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Outcomes

II.G.CO.11

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.

II.G.SRT.5

Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.

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