# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 14   b = 19   c = 30

Area: T = 101.6665812838
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 20.8999027966° = 20°53'57″ = 0.36547568485 rad
Angle ∠ B = β = 28.95550243719° = 28°57'18″ = 0.50553605103 rad
Angle ∠ C = γ = 130.1465947662° = 130°8'45″ = 2.27114752948 rad

Height: ha = 14.52436875483
Height: hb = 10.70216645093
Height: hc = 6.77877208559

Median: ma = 24.11443111036
Median: mb = 21.39550928953
Median: mc = 7.31443694192

Inradius: r = 3.22774861218
Circumradius: R = 19.62331156208

Vertex coordinates: A[30; 0] B[0; 0] C[12.25; 6.77877208559]
Centroid: CG[14.08333333333; 2.25992402853]
Coordinates of the circumscribed circle: U[15; -12.65217455976]
Coordinates of the inscribed circle: I[12.5; 3.22774861218]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 159.1010972034° = 159°6'3″ = 0.36547568485 rad
∠ B' = β' = 151.0454975628° = 151°2'42″ = 0.50553605103 rad
∠ C' = γ' = 49.85440523379° = 49°51'15″ = 2.27114752948 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    