# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse isosceles triangle.

Sides: a = 14   b = 14   c = 25

Area: T = 78.81095013307
Perimeter: p = 53
Semiperimeter: s = 26.5

Angle ∠ A = α = 26.76655005768° = 26°45'56″ = 0.4677146111 rad
Angle ∠ B = β = 26.76655005768° = 26°45'56″ = 0.4677146111 rad
Angle ∠ C = γ = 126.4698998846° = 126°28'8″ = 2.20773004316 rad

Height: ha = 11.25985001901
Height: hb = 11.25985001901
Height: hc = 6.30547601065

Median: ma = 19.01331533418
Median: mb = 19.01331533418
Median: mc = 6.30547601065

Inradius: r = 2.97439434464
Circumradius: R = 15.54438110801

Vertex coordinates: A[25; 0] B[0; 0] C[12.5; 6.30547601065]
Centroid: CG[12.5; 2.10215867022]
Coordinates of the circumscribed circle: U[12.5; -9.23990509736]
Coordinates of the inscribed circle: I[12.5; 2.97439434464]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 153.2344499423° = 153°14'4″ = 0.4677146111 rad
∠ B' = β' = 153.2344499423° = 153°14'4″ = 0.4677146111 rad
∠ C' = γ' = 53.53110011535° = 53°31'52″ = 2.20773004316 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.