1.	In the figure shown, is complementary to and is complementary to . Which statement is true if none of the measures of the angles equal 45?
		A.	is complementary to .	B.	is complementary to itself.
		C.		D.
		Hint
	2.	If and are vertical angles and and find
		A.	43	B.	72
		C.	68	D.	23
		Hint
	3.	Which statement explains why
		A.	If the sum of the measures of two angles is 180, then they are supplementary.
		B.	If two angles form a linear pair, then they are supplementary.
		C.	Angles supplementary to the same angle are congruent.
		D.	All right angles are congruent.
		Hint
	4.	Which statement is not true in the picture?
		A.
		B.
		C.	If then
		D.	If and are complementary and and are complementary, then
		Hint
	5.	Two angles are congruent if they are ______.
		A.	vertical	B.	adjacent
		C.	supplementary	D.	a linear pair
		Hint