1.	Which figure is not a polygon?
		A.		B.
		C.		D.
		Hint
	2.	The polygon shown is
		A.	regular	B.	concave
		C.	a hexagon	D.	an octagon
		Hint
	3.	What is the measure of an interior angle of a regular 9-gon?
		A.	147	B.	144
		C.	135	D.	140
		Hint
	4.	The measure of an interior angle of a regular polygon is 160. How many sides does the polygon have?
		A.	16	B.	20
		C.	18	D.	12
		Hint
	5.	Find the value of x.
		A.	12.75	B.	35.25
		C.	24	D.	46.5
		Hint