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asked 11 months ago
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The sum of the angles of a triangle is 180 degrees. Sum the two angles you know and subtract that from 180 degrees to find the third angle.
Example
Two angles of a triangle are 30 degrees and 60 degrees. What is the third angle?
(remaining angle) = 180 - (30+60) = 180 - 90 = 90
The third angle is 90 degrees.
Example
Two angles of a triangle are 30 degrees and 60 degrees. What is the third angle?
(remaining angle) = 180 - (30+60) = 180 - 90 = 90
The third angle is 90 degrees.
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Take the sum of the other two angles and subtract from 360. What you have left is the third angle.
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