# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 63.64   b = 63.64   c = 90

Area: T = 2025.025479985
Perimeter: p = 217.28
Semiperimeter: s = 108.64

Angle ∠ A = α = 455.0003508439° = 45°1″ = 0.78554042868 rad
Angle ∠ B = β = 455.0003508439° = 45°1″ = 0.78554042868 rad
Angle ∠ C = γ = 89.99992983121° = 89°59'57″ = 1.571078408 rad

Height: ha = 63.64399999952
Height: hb = 63.64399999952
Height: hc = 45.00105511077

Median: ma = 71.15113344921
Median: mb = 71.15113344921
Median: mc = 45.00105511077

Inradius: r = 18.64397717217
Circumradius: R = 455.0000000034

Vertex coordinates: A[90; 0] B[0; 0] C[45; 45.00105511077]
Centroid: CG[45; 155.0001837026]
Coordinates of the circumscribed circle: U[45; 0.00105511044]
Coordinates of the inscribed circle: I[45; 18.64397717217]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 1354.999649156° = 134°59'59″ = 0.78554042868 rad
∠ B' = β' = 1354.999649156° = 134°59'59″ = 0.78554042868 rad
∠ C' = γ' = 90.00107016879° = 90°3″ = 1.571078408 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.