Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 22.42   b = 16.8   c = 6.24

Area: T = 26.24993309993
Perimeter: p = 45.46
Semiperimeter: s = 22.73

Angle ∠ A = α = 149.9487818293° = 149°56'52″ = 2.61770831354 rad
Angle ∠ B = β = 22.04401570205° = 22°2'25″ = 0.38546733077 rad
Angle ∠ C = γ = 8.01220246869° = 8°43″ = 0.14398362105 rad

Height: ha = 2.34215995539
Height: hb = 3.12549203571
Height: hc = 8.41332471152

Median: ma = 5.91097123449
Median: mb = 14.15105123582
Median: mc = 19.56330723558

Inradius: r = 1.15548319841
Circumradius: R = 22.38546984906

Vertex coordinates: A[6.24; 0] B[0; 0] C[20.78215705128; 8.41332471152]
Centroid: CG[9.00771901709; 2.80444157051]
Coordinates of the circumscribed circle: U[3.12; 22.16661978363]
Coordinates of the inscribed circle: I[5.93; 1.15548319841]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 30.05221817074° = 30°3'8″ = 2.61770831354 rad
∠ B' = β' = 157.9659842979° = 157°57'35″ = 0.38546733077 rad
∠ C' = γ' = 171.9887975313° = 171°59'17″ = 0.14398362105 rad

How did we calculate this triangle?

1. The triangle circumference is the sum of the lengths of its three sides 2. Semiperimeter of the triangle 3. The triangle area using Heron's formula 4. Calculate the heights of the triangle from its area. 5. Calculation of the inner angles of the triangle using a Law of Cosines     