# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse isosceles triangle.

Sides: a = 15   b = 15   c = 29

Area: T = 55.6888306672
Perimeter: p = 59
Semiperimeter: s = 29.5

Angle ∠ A = α = 14.8355111582° = 14°50'6″ = 0.2598921542 rad
Angle ∠ B = β = 14.8355111582° = 14°50'6″ = 0.2598921542 rad
Angle ∠ C = γ = 150.3329776836° = 150°19'47″ = 2.62437495696 rad

Height: ha = 7.42551075563
Height: hb = 7.42551075563
Height: hc = 3.84105728739

Median: ma = 21.83546055609
Median: mb = 21.83546055609
Median: mc = 3.84105728739

Inradius: r = 1.88877392092
Circumradius: R = 29.29325049707

Vertex coordinates: A[29; 0] B[0; 0] C[14.5; 3.84105728739]
Centroid: CG[14.5; 1.2880190958]
Coordinates of the circumscribed circle: U[14.5; -25.45219320968]
Coordinates of the inscribed circle: I[14.5; 1.88877392092]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.1654888418° = 165°9'54″ = 0.2598921542 rad
∠ B' = β' = 165.1654888418° = 165°9'54″ = 0.2598921542 rad
∠ C' = γ' = 29.6770223164° = 29°40'13″ = 2.62437495696 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.