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04-07-2020
Mathematics

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The measure of two angles of a triangle are 31 and 128 degrees. Find the measure of the third angle.

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04-07-2020

Answer:

21°

Step-by-step explanation:

All angles in a triangle add up to 180°.

180 - 31 - 128

= 21

The measure of the third angle is 21°.

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