# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 105   b = 69.72   c = 113.32

Area: T = 3580.294350319
Perimeter: p = 288.04
Semiperimeter: s = 144.02

Angle ∠ A = α = 65.00325380454° = 65°9″ = 1.1354508311 rad
Angle ∠ B = β = 36.99989796535° = 36°59'56″ = 0.64657540148 rad
Angle ∠ C = γ = 77.99884823011° = 77°59'55″ = 1.36113303277 rad

Height: ha = 68.19660667275
Height: hb = 102.705491977
Height: hc = 63.18990840662

Median: ma = 78.07698430894
Median: mb = 103.5287733482
Median: mc = 68.79437758813

Inradius: r = 24.86596965921
Circumradius: R = 57.92661442714

Vertex coordinates: A[113.32; 0] B[0; 0] C[83.85878538652; 63.18990840662]
Centroid: CG[65.72659512884; 21.06330280221]
Coordinates of the circumscribed circle: U[56.66; 12.04550234601]
Coordinates of the inscribed circle: I[74.3; 24.86596965921]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 114.9977461955° = 114°59'51″ = 1.1354508311 rad
∠ B' = β' = 143.0011020347° = 143°4″ = 0.64657540148 rad
∠ C' = γ' = 102.0021517699° = 102°5″ = 1.36113303277 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.