Geometry Unit Test

Quadrilateral ABCD is a rectangle. Find the measure of ∠COD.

Which of the following properties is always true for a parallelogram?

• Diagonals bisect each other.

• Diagonals are perpendicular.

• Diagonals are congruent.

• Diagonals bisect opposite angles.

Which of the following quadrilaterals always have diagonals that are congruent? Check all that apply.

• Parallelograms

• Rectangles

• Rhombi

• Squares

• Isosceles Trapezoids

What is the sum of the measures of the interior angles of a 27-gon?

• 4860°

• 4500°

• 5220°

• 166.7°

If the sum of the interior angles of a polygon is 2340°, how many sides does the polygon have?

• 11 sides

• 13 sides

• 15 sides

• 16 sides

Find m∠S.

A regular hexagon is shown below. Find the value of x.

If the polygon shown below is a regular nonagon, what is the value of x?