Find the missing angle measure in isosceles triangleQRS with base angles Q and S.
angleQ = ___°, angleR = 110°, angleS = ___°
A. Both are 35°.
B. ∠Q = 40°, ∠S = 30°
C. ∠Q = 30°, ∠S = 40°
D. Cannot be determined with just one given angle.

Question

Find the missing angle measure in isosceles triangleQRS with base angles Q and S. 
angleQ = ___°, angleR = 110°, angleS = ___°
	A.	Both are 35°.
	B.	∠Q = 40°, ∠S = 30°
	C.	∠Q = 30°, ∠S = 40°
	D.	Cannot be determined with just one given angle.

anonymous · Answer

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anonymous · Answer

The answer is A. With 110 degrees, there are 70 left over. Isos. triangles have two equal sides, meaning two equal angles. Well, you know the two equal sides aren't 110, because then there are too many degrees. Therefore, with 70 degrees left over and two equal sides, 70/2= 35 degrees.