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Triangle Angle Calculator

This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give the unknown angle of a triangle, assuming two angles are known. Enter the two known angles. Then click on calculate. In a triangle, all interior angles total to 180 degrees. No two angles can total to 180 degrees or more. The formula is 180 degrees - (angle 1 + angle2). It is for any shape triangle. In case you need them, here are the Trig Triangle Formula Tables, as well as the Right Triangle Angle And Side Calculator.

Required Data Entry
Known Angle 1 Degrees
Known Angle 2 Degrees

Calculated Results
Derived Angle 3 Degrees
Updated 8.15.11

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