Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 22.24   b = 18.8   c = 36.44

Area: T = 171.2187548808
Perimeter: p = 77.48
Semiperimeter: s = 38.74

Angle ∠ A = α = 29.99902560311° = 29°59'25″ = 0.52334287113 rad
Angle ∠ B = β = 24.99548859087° = 24°59'42″ = 0.43662430553 rad
Angle ∠ C = γ = 125.015485806° = 125°53″ = 2.18219208871 rad

Height: ha = 15.39772615835
Height: hb = 18.2154632852
Height: hc = 9.39772309994

Median: ma = 26.77769004928
Median: mb = 28.68659826396
Median: mc = 9.59548110977

Inradius: r = 4.42196579455
Circumradius: R = 22.24765532681

Vertex coordinates: A[36.44; 0] B[0; 0] C[20.15771240395; 9.39772309994]
Centroid: CG[18.86657080132; 3.13224103331]
Coordinates of the circumscribed circle: U[18.22; -12.76548240219]
Coordinates of the inscribed circle: I[19.94; 4.42196579455]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.0109743969° = 150°35″ = 0.52334287113 rad
∠ B' = β' = 155.0055114091° = 155°18″ = 0.43662430553 rad
∠ C' = γ' = 54.98551419398° = 54°59'7″ = 2.18219208871 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     