1.	The polygon shown is_______.
		A.	concave	B.	a hexagon
		C.	regular	D.	a quadrilateral
		Hint
	2.	What is the measure of an interior angle of a regular 9-gon?
		A.	147	B.	135
		C.	140	D.	144
		Hint
	3.	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
	4.	Find the measure of .
		A.	75°	B.	29°
		C.	140°	D.	110°
		Hint
	5.	What is the value of x in the figure?
		A.	117°	B.	151°
		C.	297°	D.	120°
		Hint