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Can the angle measures of a triangle be 12° 77° and 91°

User Dalimian
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1 Answer

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We can test if 3 angles can form a triangle by adding them. If the sum of the 3 angles is equal to 180 degrees, then they can be the measures of the angles of a triangle.

We then add the angles:


12+77+91=180

As the sum is equal to 180, they can be measures of a triangle.

Answer: Yes

User Aturc
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