# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse isosceles triangle.

Sides: a = 90   b = 90   c = 127.28

Area: T = 40509.9999997
Perimeter: p = 307.28
Semiperimeter: s = 153.64

Angle ∠ A = α = 454.9996491518° = 44°59'59″ = 0.78553920399 rad
Angle ∠ B = β = 454.9996491518° = 44°59'59″ = 0.78553920399 rad
Angle ∠ C = γ = 90.00107016965° = 90°3″ = 1.57108085737 rad

Height: ha = 909.9999999933
Height: hb = 909.9999999933
Height: hc = 63.63992206112

Median: ma = 100.6243551915
Median: mb = 100.6243551915
Median: mc = 63.63992206112

Inradius: r = 26.36603228306
Circumradius: R = 63.64400000048

Vertex coordinates: A[127.28; 0] B[0; 0] C[63.64; 63.63992206112]
Centroid: CG[63.64; 21.21330735371]
Coordinates of the circumscribed circle: U[63.64; -0.00107793936]
Coordinates of the inscribed circle: I[63.64; 26.36603228306]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 1355.000350848° = 135°1″ = 0.78553920399 rad
∠ B' = β' = 1355.000350848° = 135°1″ = 0.78553920399 rad
∠ C' = γ' = 89.99992983035° = 89°59'57″ = 1.57108085737 rad

# How did we calculate this triangle? ### 1. The triangle circumference is the sum of the lengths of its three sides ### 2. Semiperimeter of the triangle ### 3. The triangle area using Heron's formula ### 4. Calculate the heights of the triangle from its area. ### 5. Calculation of the inner angles of the triangle using a Law of Cosines ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.