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Ierofanga [76]
4 years ago
15

Two angles of a triangle measure 12º and 40°.

Mathematics
1 answer:
jeka57 [31]4 years ago
8 0

The sum of the interior angles in each triangle is 180 degrees.

so :

12 + 40 + x = 180

52 + x = 180

x = 180 - 52

x = 128

so the third angle of the triangle is 128 degrees which means C is correct.

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