Triangle calculator SAS

Please enter two sides of the triangle and the included angle
°

Equilateral triangle.

Sides: a = 150   b = 150   c = 150

Area: T = 9742.786579257
Perimeter: p = 450
Semiperimeter: s = 225

Angle ∠ A = α = 60° = 1.04771975512 rad
Angle ∠ B = β = 60° = 1.04771975512 rad
Angle ∠ C = γ = 60° = 1.04771975512 rad

Height: ha = 129.9043810568
Height: hb = 129.9043810568
Height: hc = 129.9043810568

Median: ma = 129.9043810568
Median: mb = 129.9043810568
Median: mc = 129.9043810568

Inradius: r = 43.30112701892
Circumradius: R = 86.60325403784

Vertex coordinates: A[150; 0] B[0; 0] C[75; 129.9043810568]
Centroid: CG[75; 43.30112701892]
Coordinates of the circumscribed circle: U[75; 43.30112701892]
Coordinates of the inscribed circle: I[75; 43.30112701892]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120° = 1.04771975512 rad
∠ B' = β' = 120° = 1.04771975512 rad
∠ C' = γ' = 120° = 1.04771975512 rad

How did we calculate this triangle?

1. Calculation of the third side c of the triangle using a Law of Cosines Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. 2. The triangle circumference is the sum of the lengths of its three sides 3. Semiperimeter of the triangle 4. The triangle area using Heron's formula 5. Calculate the heights of the triangle from its area. 6. Calculation of the inner angles of the triangle using a Law of Cosines     