1.	Which triangle is necessarily acute?
		A.		B.
		C.		D.
		Hint
	2.	has angles that measure 45°, 90°, and 45°. Classify the triangle by its angles.
		A.	obtuse	B.	right
		C.	acute	D.	straight
		Hint
	3.	Classify by its angles and sides.
		A.	acute isosceles	B.	obtuse equilateral
		C.	acute equilateral	D.	obtuse isosceles
		Hint
	4.	Find measures of and of isosceles triangle TUV with base
		A.	21, 7	B.	17, 23
		C.	25, 13	D.	17, 13
		Hint
	5.	Given isosceles triangle ABC find the measure of base .
		A.	4	B.	9
		C.	11	D.	16
		Hint