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Two angles of a triangle measure 42° and 84°. find the measure of the third angle, in degrees. (enter an exact number.)

Two angles of a triangle measure 42° and 84°. find the measure of the third angle, in degrees. (enter an exact number.)
asked 76.0k views
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Two angles of a triangle measure 42° and 84°. find the measure of the third angle, in degrees. (enter an exact number.)

asked
User Netlemon
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2 Answers

3 votes

Answer:

The answer is 56° your very welcome I needed this to be 20 characters so yeah

answered
User Jason Byrd
by
7.8k points
1 vote
Let the third angle be x.

Sum of the interior angles of a triangle = 180°

42 + 84 + x = 180

126 + x = 180

x = 180 - 126

x = 54°

Hence, the third angle is 54°.
answered
User Kmdsax
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