Triangle calculator

Please enter what you know about the triangle:
Symbols definition of ABC triangle

You have entered side a, b and c (as equilateral triangle).

Equilateral triangle.

Sides: a = 33   b = 33   c = 33

Area: T = 471.5510832361
Perimeter: p = 99
Semiperimeter: s = 49.5

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

Height: ha = 28.57988383249
Height: hb = 28.57988383249
Height: hc = 28.57988383249

Median: ma = 28.57988383249
Median: mb = 28.57988383249
Median: mc = 28.57988383249

Inradius: r = 9.52662794416
Circumradius: R = 19.05325588833

Vertex coordinates: A[33; 0] B[0; 0] C[16.5; 28.57988383249]
Centroid: CG[16.5; 9.52662794416]
Coordinates of the circumscribed circle: U[16.5; 9.52662794416]
Coordinates of the inscribed circle: I[16.5; 9.52662794416]

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

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How did we calculate this triangle?

1. Input data entered: side a, b and c (as equilateral triangle).


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