# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 17.32   b = 10   c = 20

Area: T = 86.65999998882
Perimeter: p = 47.32
Semiperimeter: s = 23.66

Angle ∠ A = α = 59.99770889407° = 59°59'50″ = 1.04771467436 rad
Angle ∠ B = β = 309.9999999573° = 30° = 0.52435987749 rad
Angle ∠ C = γ = 90.0032911102° = 90°10″ = 1.57108471351 rad

Height: ha = 10.9999999871
Height: hb = 17.32199999776
Height: hc = 8.66599999888

Median: ma = 13.22989228586
Median: mb = 18.02875123076
Median: mc = 10.9995599903

Inradius: r = 3.66601859632
Circumradius: R = 100.0000000129

Vertex coordinates: A[20; 0] B[0; 0] C[154.99956; 8.66599999888]
Centroid: CG[11.667652; 2.88766666629]
Coordinates of the circumscribed circle: U[10; -0.00105080831]
Coordinates of the inscribed circle: I[13.66; 3.66601859632]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120.0032911059° = 120°10″ = 1.04771467436 rad
∠ B' = β' = 1500.000000043° = 150° = 0.52435987749 rad
∠ C' = γ' = 89.9977088898° = 89°59'50″ = 1.57108471351 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.