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ΔTIC is an isosceles triangle with vertex angle I. Find the measures of the base angles of ΔTIC if m∠I = 100º. A)80° B)50° C)60° D)40°
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ΔTIC is an isosceles triangle with vertex angle I. Find the measures of the base angles of ΔTIC if m∠I = 100º.

A)80°
B)50°
C)60°
D)40°

User Sandeep Vashisth
by
6.8k points

1 Answer

6 votes
It would be D: 40 degrees. This is because in an isosceles triangle, the base angles are the same and since the measure of a triangle equals 180 degrees, the base angles would be 40 degrees because 100+40+40 = 180.
User Sourabh Kasliwal
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6.9k points
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