Two angles in a triangle add up to 138 degrees what is the size of the 3rd angle

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asked Dec 8, 2018 4.5k views

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Janneck Lange · Answer 1 · 2018-12-14T02:00:21+0000

The measurement of the second angle is 42°. All of the angles of a triangle add up to a total of 180°. If two angles add up to 138°. Then the last angle has to be 42° (180-138).

Two angles in a triangle add up to 138 degrees what is the size of the 3rd angle

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