Find the third angle of a triangle from the other two angles.
Last updated: June 2026 | By Patchworkr Team
If A = 65 degrees and B = 52 degrees, then C = 180 - 65 - 52 = 63 degrees.
The three angles sum to 180 degrees, which is the defining fact used here.
The calculator rejects impossible inputs where the first two angles already use up 180 degrees or more.
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