# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 22.01   b = 20   c = 35.65

Area: T = 197.7598614618
Perimeter: p = 77.66
Semiperimeter: s = 38.83

Angle ∠ A = α = 33.6921611776° = 33°41'30″ = 0.58880295558 rad
Angle ∠ B = β = 30.26992497232° = 30°16'9″ = 0.52882980698 rad
Angle ∠ C = γ = 116.0399138501° = 116°2'21″ = 2.0255265028 rad

Height: ha = 17.97698877436
Height: hb = 19.77658614618
Height: hc = 11.0944452433

Median: ma = 26.72773497564
Median: mb = 27.88769378025
Median: mc = 11.15774829151

Inradius: r = 5.09329336755
Circumradius: R = 19.83987438523

Vertex coordinates: A[35.65; 0] B[0; 0] C[19.00992931276; 11.0944452433]
Centroid: CG[18.22197643759; 3.6988150811]
Coordinates of the circumscribed circle: U[17.825; -8.70989111052]
Coordinates of the inscribed circle: I[18.83; 5.09329336755]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 146.3088388224° = 146°18'30″ = 0.58880295558 rad
∠ B' = β' = 149.7310750277° = 149°43'51″ = 0.52882980698 rad
∠ C' = γ' = 63.96108614993° = 63°57'39″ = 2.0255265028 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    