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Ugo [173]
3 years ago
11

Two angels of a triangle measure 12 and 40.

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

C) 128

Step-by-step explanation:

Sum of all three angles of triangle = 180

Let the third angle be 'x'

x + 12 + 40 = 180

     x + 52 = 180

             x = 180 - 52

            x = 128

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