1.	Which figure is not a polygon?
		A.		B.
		C.		D.
		Hint
	2.	The polygon shown is_______.
		A.	a quadrilateral	B.	regular
		C.	a hexagon	D.	concave
		Hint
	3.	What is the measure of an interior angle of a regular 9-gon?
		A.	144	B.	147
		C.	135	D.	140
		Hint
	4.	Find the sum of the measures of the interior angles of a 28-gon.
		A.	5040	B.	4680
		C.	180	D.	167
		Hint
	5.	Find the measure of .
		A.	75°	B.	110°
		C.	140°	D.	29°
		Hint