Special Right Triangles Calculator

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Units for all side-length outputs.
Short leg (a)Solved
5m

The shortest leg of the triangle

Long leg (b)5m
Hypotenuse (c)7.0711m
Angle A45deg
Angle B45deg
Area12.5m²
Perimeter17.0711m

45-45-90 triangle solved. Hypotenuse = 7.0711 m.

  • All three sides: a = 5.0000 m, b = 5.0000 m, c = 7.0711 m.
  • Area = 12.5000 m^2, perimeter = 17.0711 m.
  • Both legs are equal and the hypotenuse is exactly leg x sqrt(2). This triangle is the cross-section of a square cut along its diagonal.

Next stepVerify with the Pythagorean theorem: a^2 + b^2 should equal c^2.

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