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marysya [2.9K]
3 years ago
7

An isosceles triangle has base angles that each measure 39 °. Which equation can be used to fi nd t, the measure of the third an

gle of this isosceles triangle in degrees?
Mathematics
1 answer:
Montano1993 [528]3 years ago
5 0

Answer: 102°

Step-by-step explanation:

First and foremost, we should note that an isosceles triangle has two sides that are equal and that the sum of angles in a triangle equals to 180°.

Since we are told that the isosceles triangle has base angles that each measure 39°, the third angle will be:

t + 39° + 39° = 180°

t + 78° = 180°

t = 180° - 78°

t = 102°

The third angle is 102°.

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