Triangle calculator

Please enter what you know about the triangle:
You have entered side a, b and c.

Acute isosceles triangle.

Sides: a = 62   b = 103   c = 103

Area: T = 3044.951123114
Perimeter: p = 268
Semiperimeter: s = 134

Angle ∠ A = α = 35.03218507568° = 35°1'55″ = 0.61114211388 rad
Angle ∠ B = β = 72.48440746216° = 72°29'3″ = 1.26550857574 rad
Angle ∠ C = γ = 72.48440746216° = 72°29'3″ = 1.26550857574 rad

Height: ha = 98.22442332625
Height: hb = 59.1255266624
Height: hc = 59.1255266624

Median: ma = 98.22442332625
Median: mb = 67.63332019056
Median: mc = 67.63332019056

Inradius: r = 22.72435166503
Circumradius: R = 54.0043984799

Vertex coordinates: A[103; 0] B[0; 0] C[18.66601941748; 59.1255266624]
Centroid: CG[40.55333980583; 19.7088422208]
Coordinates of the circumscribed circle: U[51.5; 16.25436264929]
Coordinates of the inscribed circle: I[31; 22.72435166503]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 144.9688149243° = 144°58'5″ = 0.61114211388 rad
∠ B' = β' = 107.5165925378° = 107°30'57″ = 1.26550857574 rad
∠ C' = γ' = 107.5165925378° = 107°30'57″ = 1.26550857574 rad

How did we calculate this triangle?

1. Input data entered: side a, b and c. 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     