Triangle calculator SSS - result

Please enter the triangle sides:

Right scalene triangle.

Sides: a = 30   b = 12.5   c = 32.5

Area: T = 187.5
Perimeter: p = 75
Semiperimeter: s = 37.5

Angle ∠ A = α = 67.3880135052° = 67°22'49″ = 1.17660052071 rad
Angle ∠ B = β = 22.6219864948° = 22°37'11″ = 0.39547911197 rad
Angle ∠ C = γ = 90° = 1.57107963268 rad

Height: ha = 12.5
Height: hb = 30
Height: hc = 11.53884615385

Median: ma = 19.52656241898
Median: mb = 30.64441266803
Median: mc = 16.25

Inradius: r = 5
Circumradius: R = 16.25

Vertex coordinates: A[32.5; 0] B[0; 0] C[27.69223076923; 11.53884615385]
Centroid: CG[20.06441025641; 3.84661538462]
Coordinates of the circumscribed circle: U[16.25; 0]
Coordinates of the inscribed circle: I[25; 5]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 112.6219864948° = 112°37'11″ = 1.17660052071 rad
∠ B' = β' = 157.3880135052° = 157°22'49″ = 0.39547911197 rad
∠ C' = γ' = 90° = 1.57107963268 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     