Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 0.45   b = 90   c = 89.56

Area: T = 4.23549008311
Perimeter: p = 180.01
Semiperimeter: s = 90.005

Angle ∠ A = α = 0.06602059424° = 0°3'37″ = 0.00110507919 rad
Angle ∠ B = β = 167.8688368114° = 167°52'6″ = 2.93298557335 rad
Angle ∠ C = γ = 12.07114259434° = 12°4'17″ = 0.21106861281 rad

Height: ha = 18.82217814716
Height: hb = 0.09441089074
Height: hc = 0.09545712557

Median: ma = 89.78799876086
Median: mb = 44.56600499326
Median: mc = 45.22200492039

Inradius: r = 0.04770518397
Circumradius: R = 214.1244258417

Vertex coordinates: A[89.56; 0] B[0; 0] C[-0.44399503126; 0.09545712557]
Centroid: CG[29.70766832291; 0.03215237519]
Coordinates of the circumscribed circle: U[44.78; 209.3899468812]
Coordinates of the inscribed circle: I[0.005; 0.04770518397]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 179.9439794058° = 179°56'23″ = 0.00110507919 rad
∠ B' = β' = 12.13216318857° = 12°7'54″ = 2.93298557335 rad
∠ C' = γ' = 167.9298574057° = 167°55'43″ = 0.21106861281 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     