Triangle Calculator

Please enter what you know about the triangle:
Symbols definition of ABC triangle

You have entered Sides a, b, and c.

Entered triangle sides do not satisfy the triangle inequality. The triangle cannot be constructed and therefore cannot be solved.

a = 40
b = 10
c = 55

a+b ≤ c
40 + 10 ≤ 55
50 ≤ 55

The sum of the lengths of sides a, b must be greater than the length of the remaining side c.

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See triangle basics on Wikipedia or more details on solving triangles.