SSS Triangle Calculator (Side-Side-Side)

Your details

Choose the length unit for all three sides. The angles are always in degrees.
Length of side a (the side opposite angle A).
Length of side b (the side opposite angle B).
Length of side c (the side opposite angle C).
Display angles in degrees or radians.
AreaAcute triangle
14.6969

Triangle area by Heron's formula

Angle A44.4153
Angle B57.1217
Angle C78.463
Perimeter18
Inradius (r)1.633
Circumradius (R)3.5722
Altitude to a (hₐ)5.8788
Altitude to b (hᵇ)4.899
Altitude to c (hᶜ)4.1991
Median mₐ6.0208
Median mᵇ5.2915
Median mᶜ4.272
Bisector tₐ5.9822
Bisector tᵇ5.1235
Bisector tᶜ4.2251
Triangle typeScalene Acute
_angleUnitLabeldeg

Solved: Scalene Acute triangle with sides 5, 6, 7.

  • The triangle is scalene acute, with angles 44.42deg, 57.12deg, and 78.46deg.
  • Area is 14.6969, and the perimeter is 18.0000.
  • The inscribed circle has radius 1.6330 and the circumscribed circle has radius 3.5722.

Next stepUse the altitudes to find the height for any chosen base, or the circumradius to draw the circle that passes through all three vertices.

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