1.	Which figure is not a polygon?
		A.		B.
		C.		D.
		Hint
	2.	The polygon shown is_______.
		A.	regular	B.	concave
		C.	a quadrilateral	D.	a hexagon
		Hint
	3.	The polygon shown is
		A.	regular	B.	an octagon
		C.	a hexagon	D.	concave
		Hint
	4.	The measure of an interior angle of a regular polygon is 160. How many sides does the polygon have?
		A.	12	B.	20
		C.	16	D.	18
		Hint
	5.	The exterior angle of a regular polygon is 32.7°. Find the number of sides.
		A.	7	B.	6
		C.	10	D.	11
		Hint