Parallelograms and Polygons

What is the best description of the polygon?

• equilateral

• equiangular

• regular

• none of the above

If the sum of the interior angles of a polygon is 1800^o, how many sides does it have?

Determine the value of x.

Determine the value of x.

• 2

• 18

• 8

• 9

PQRS is a parallelogram. Solve for x.

PQRS is a parallelogram. Solve for y.

ABCD is a parallelogram. What is the measure of <C?

What is the sum of the degrees of the interior angles of a 19-gon?

What is the sum of the exterior angles of a 25-gon?

The figure is a parallelogram.  
Solve for x.  

• 1

• 11

• 7

• 6