Trapezoids and Kites — Unit test Answers

The diagonal of a square is x units. What is the area of the square in terms of x?

Each exterior angle of a regular decagon has a measure of (3x + 6)°. What is the value of x?

Manuel wants to buy a window shade to cover the window and frame shown. The window is in the shape of a regular octagon.The radius of the window, including the frame, is 2 ft, and the measure of each edge of the octagonal frame is 1.52 ft.

What is the sum of the measures of the interior angles of a 12-gon?

On a coordinate plane, parallelogram A B C D is shown. Point A is at (1, 3), point B is at (8, 8), point C is at (12, 5), and point D is at (5, 0).