Triangle calculator

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

Obtuse isosceles triangle.

Sides: a = 1000   b = 1423   c = 1000

Area: T = 499961.1587551
Perimeter: p = 3423
Semiperimeter: s = 1711.5

Angle ∠ A = α = 44.64329091312° = 44°38'34″ = 0.7799165752 rad
Angle ∠ B = β = 90.71441817375° = 90°42'51″ = 1.58332611496 rad
Angle ∠ C = γ = 44.64329091312° = 44°38'34″ = 0.7799165752 rad

Height: ha = 999.9222315102
Height: hb = 702.6866096347
Height: hc = 999.9222315102

Median: ma = 1123.594445531
Median: mb = 702.6866096347
Median: mc = 1123.594445531

Inradius: r = 292.1198701461
Circumradius: R = 711.5555277099

Vertex coordinates: A[1000; 0] B[0; 0] C[-12.46545; 999.9222315102]
Centroid: CG[329.17985; 333.3077438368]
Coordinates of the circumscribed circle: U[500; 506.2721579656]
Coordinates of the inscribed circle: I[288.5; 292.1198701461]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135.3577090869° = 135°21'26″ = 0.7799165752 rad
∠ B' = β' = 89.28658182625° = 89°17'9″ = 1.58332611496 rad
∠ C' = γ' = 135.3577090869° = 135°21'26″ = 0.7799165752 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     