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Q: If two angles of a triangle each measure 54 What is the measure of the third angle?

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Two angles of a triangle add up to 65°. What is the measure of the third angle?

90o

The third angle of a triangle is equal to 180 degrees minus (the sum of the first two angles).

180- total of the first two angles= 3rd angle

The missing angle measure is 100 degrees.

The sum of two complementary angles is 90 degrees. The three angles of a triangle add up to 180 degrees. Hence, if you subtract the complementary angles from 180, you have the measure of the third angle: 180 - 90 = 90 (this is the third angle) As a rule, if two angles of a triangle are complementary, the third angle is a right angle (90 deg). The three angles together form a right triangle.

The third angle is 85 degrees. The sum of all internal angles in a triangle is always 180 degrees

63

The sum of the angles is 180 degrees in any triangle. So 180-140 is 40 and the third angle is 40 degrees.

...a right triangle.

180-39-77 = 64 degrees

96˚all angles to a triangle equals 180˚

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