1.	The polygon shown is_______.
		A.	regular	B.	a hexagon
		C.	concave	D.	a quadrilateral
		Hint
	2.	The polygon shown is
		A.	an octagon	B.	concave
		C.	regular	D.	a hexagon
		Hint
	3.	What is the measure of an interior angle of a regular 9-gon?
		A.	140	B.	144
		C.	147	D.	135
		Hint
	4.	The measure of an interior angle of a regular polygon is 160. How many sides does the polygon have?
		A.	18	B.	12
		C.	20	D.	16
		Hint
	5.	Find the value of x.
		A.	46.5	B.	12.75
		C.	35.25	D.	24
		Hint