1.	Classify the given angle.
		A.	obtuse	B.	acute
		C.	complementary	D.	right
		Hint
	2.	The angles shown are complementary. Find the measure of .
		A.	90	B.	180
		C.	55	D.	145
		Hint
	3.	Classify the pair of angles.
		A.	The angles are supplementary angles because their measures have a sum of 180°.	B.	The angles are supplementary angles because their measures have a sum of 90°.
		C.	The angles are complementary angles because their measures have a sum of 180°.	D.	The angles are complementary angles because their measures have a sum of 90°.
		Hint
	4.	What is the measure of the angle?
		A.	60°	B.	90°
		C.	120°	D.	150°
		Hint
	5.	Classify the given angle.
		A.	right	B.	obtuse
		C.	complementary	D.	acute
		Hint