Triangle calculator

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

You have entered side a, b and c.

Obtuse scalene triangle.

Sides: a = 5.321   b = 7.942   c = 9.707

Area: T = 21.1187780393
Perimeter: p = 22.97
Semiperimeter: s = 11.485

Angle ∠ A = α = 33.22197843724° = 33°13'11″ = 0.58797946141 rad
Angle ∠ B = β = 54.85663337337° = 54°51'23″ = 0.95774236392 rad
Angle ∠ C = γ = 91.92438818939° = 91°55'26″ = 1.60443744003 rad

Height: ha = 7.93875231697
Height: hb = 5.31880006026
Height: hc = 4.35110415974

Median: ma = 8.46600441045
Median: mb = 6.74554135529
Median: mc = 4.7055076009

Inradius: r = 1.83987270695
Circumradius: R = 4.85662374151

Vertex coordinates: A[9.707; 0] B[0; 0] C[3.06329198517; 4.35110415974]
Centroid: CG[4.25766399506; 1.45503471991]
Coordinates of the circumscribed circle: U[4.85435; -0.16330324565]
Coordinates of the inscribed circle: I[3.543; 1.83987270695]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 146.7880215628° = 146°46'49″ = 0.58797946141 rad
∠ B' = β' = 125.1443666266° = 125°8'37″ = 0.95774236392 rad
∠ C' = γ' = 88.07661181061° = 88°4'34″ = 1.60443744003 rad

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How did we calculate this triangle?

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


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