1.	Which figure is not a polygon?
		A.		B.
		C.		D.
		Hint
	2.	What is the measure of an interior angle of a regular 9-gon?
		A.	140	B.	135
		C.	144	D.	147
		Hint
	3.	The measure of an interior angle of a regular polygon is 160. How many sides does the polygon have?
		A.	20	B.	12
		C.	18	D.	16
		Hint
	4.	What is the value of x in the figure?
		A.	151°	B.	297°
		C.	120°	D.	117°
		Hint
	5.	What is the value of y in the figure?
		A.	56°	B.	106°
		C.	230°	D.	111°
		Hint