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triangle has two angles with measures of 16 degrees and 64 degrees . what is the degree measure of the third angle

User Dzeikei
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The total of internal angles of a triangle always adds up to 180 degrees. Since we know 2 of the 3 angles we can find the missing angle.

64 degrees + 16 degrees = 80 degrees

This is 2 of the 3 angles.
The 3rd angle will be 180 - 80 = 100 degrees
User Sanjar Adilov
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