Chapter 6: Quadrilaterals

Find the sum of the measures of the interior angles of a regular 16-gon.

• 2848

• 2520

• 2880

• 3240

The measure of an exterior angle of a regular polygon is 60. How many sides does the polygon have?

• 12

• 6

• 3

• 9

The measure of an interior angle of a regular polygon is 140. Find the number of sides the polygon has.

• 13

• 11

• 9

• 7

What is the measure of an interior angle of a regular 9-gon?

• 147

• 144

• 140

• 135

What are the coordinates of the intersection of the diagonals of parallelogram WXYZ with vertices W(−1, 2), X(3, 2), Y(5, −1), and Z(1, −1)?

• (−1, 2)

• (−3, 1.5)

• (2, 0.5)

• (1, 1.5)

In parallelogram ABCD, AB is parallel to_______.

• ED

• DC

• BC

• AD

In parallelogram ABCD, which pair of angles are not supplementary?

• B, C

• D, B

• D, C

• A, D

Refer to the parallelogram below. Find angle XYZ.

• 127°

• 123°

• 110°

• 120°

The coordinates of the vertices of WXYZ are W(-3, 3), X(6, 6), Y(1, 0), and Z(-5, -2).Determine if WXYZ is a parallelogram. Explain.

• No. WZ is not parallel to XY.

• Yes. The two diagonals bisect each other.

• Yes. The two sets of opposite sides are parallel.

• No. WX is not parallel to ZY.

The quadrilateral below is a parallelogram because_______.

• it is a square

• the diagonals are perpendicular

• the diagonals are not congruent

• the diagonals bisect each other