1.	Which figure is not a polygon?
		A.		B.
		C.		D.
		Hint
	2.	The polygon shown is_______.
		A.	a quadrilateral	B.	regular
		C.	concave	D.	a hexagon
		Hint
	3.	The polygon shown is
		A.	an octagon	B.	a hexagon
		C.	concave	D.	regular
		Hint
	4.	What is the measure of an interior angle of a regular 9-gon?
		A.	135	B.	147
		C.	140	D.	144
		Hint
	5.	The exterior angle of a regular polygon is 32.7°. Find the number of sides.
		A.	10	B.	6
		C.	11	D.	7
		Hint