Chapter 6 Test

Find the sum of the measures of the interior angles of a convex 30-gon.

• 5400

• 5040

• 360

• 168

Find the sum of the measures of the exterior angles of a convex 21-gon.

• 21

• 180

• 360

• 3420

If the measure of each interior angle of a regular polygon is 108, find the measure of each exterior angle.

• 18

• 72

• 90

• 108

For parallelogram ABCD, find the value of x.

• 4

• 16

• 10.25

• 21.5

Which of the following is a property of a parallelogram?

• The diagonals are congruent.

• The diagonals are perpendicular.

• The diagonals bisect the angles.

• The diagonals bisect each other.

Find the values of x and y so that ABCD will be a parallelogram.

• x = 6, y = 42

• x = 6, y = 22

• x = 20, y = 42

• x = 20, y = 22

Find the value of x so that this quadrilateral is a parallelogram.

• 44

• 90

• 46

• 134

Parallelogram ABCD has vertices A(0, 0), B(2, 4), and C(10, 4). Find the coordinates of D.

• (8, 0)

• (10, 0)

• (0, 4)

• (10, 8)

Which of the following is a property of all rectangles?

• four congruent sides

• diagonals bisect the angles

• diagonals are perpendicular

• four right angles

ABCD is a rectangle with diagonals AC and BD. If AC = 2x + 10 and BD = 56, find the value of x.

• 23

• 33

• 78

• 122