1.	The common endpoint of two rays is called a(n)
		A.	angle	B.	side
		C.	degree	D.	vertex
		Hint
	2.	Use a protractor to measure .
		A.	100	B.	180
		C.	65	D.	115
		Hint
	3.	Classify the given angle.
		A.	acute	B.	right
		C.	obtuse	D.	straight
		Hint
	4.	Classify the given angle.
		A.	obtuse	B.	acute
		C.	right	D.	straight
		Hint
	5.	Classify the given angle.
		A.	right	B.	straight
		C.	obtuse	D.	acute
		Hint