Triangle calculator

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

Right scalene triangle.

Sides: a = 109   b = 60   c = 91

Area: T = 2730
Perimeter: p = 260
Semiperimeter: s = 130

Angle ∠ A = α = 90° = 1.57107963268 rad
Angle ∠ B = β = 33.3988488468° = 33°23'55″ = 0.5832913589 rad
Angle ∠ C = γ = 56.6021511532° = 56°36'5″ = 0.98878827378 rad

Height: ha = 50.09217431193
Height: hb = 91
Height: hc = 60

Median: ma = 54.5
Median: mb = 95.81875349297
Median: mc = 75.30110624095

Inradius: r = 21
Circumradius: R = 54.5

Vertex coordinates: A[91; 0] B[0; 0] C[91; 60]
Centroid: CG[60.66766666667; 20]
Coordinates of the circumscribed circle: U[45.5; 30]
Coordinates of the inscribed circle: I[70; 21]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90° = 1.57107963268 rad
∠ B' = β' = 146.6021511532° = 146°36'5″ = 0.5832913589 rad
∠ C' = γ' = 123.3988488468° = 123°23'55″ = 0.98878827378 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     