# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 8   b = 12   c = 14

Area: T = 47.9066158268
Perimeter: p = 34
Semiperimeter: s = 17

Angle ∠ A = α = 34.77219440319° = 34°46'19″ = 0.60768849107 rad
Angle ∠ B = β = 58.81113776665° = 58°48'41″ = 1.02664521779 rad
Angle ∠ C = γ = 86.41766783015° = 86°25' = 1.5088255565 rad

Height: ha = 11.9776539567
Height: hb = 7.98443597113
Height: hc = 6.84437368954

Median: ma = 12.4109673646
Median: mb = 9.69553597148
Median: mc = 7.41661984871

Inradius: r = 2.81880093099
Circumradius: R = 7.01437120602

Vertex coordinates: A[14; 0] B[0; 0] C[4.14328571429; 6.84437368954]
Centroid: CG[6.04876190476; 2.28112456318]
Coordinates of the circumscribed circle: U[7; 0.43883570038]
Coordinates of the inscribed circle: I[5; 2.81880093099]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 145.2288055968° = 145°13'41″ = 0.60768849107 rad
∠ B' = β' = 121.1898622333° = 121°11'19″ = 1.02664521779 rad
∠ C' = γ' = 93.58333216985° = 93°35' = 1.5088255565 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   