Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 5.39   b = 3.32   c = 2.45

Area: T = 2.73985475639
Perimeter: p = 11.16
Semiperimeter: s = 5.58

Angle ∠ A = α = 137.6733220065° = 137°40'24″ = 2.4032850982 rad
Angle ∠ B = β = 24.50441173744° = 24°30'15″ = 0.42876775285 rad
Angle ∠ C = γ = 17.82326625605° = 17°49'22″ = 0.31110641432 rad

Height: ha = 1.01661586508
Height: hb = 1.65497274482
Height: hc = 2.23655490318

Median: ma = 1.11877768114
Median: mb = 3.8433396935
Median: mc = 4.30554180982

Inradius: r = 0.49107791333
Circumradius: R = 4.00223277829

Vertex coordinates: A[2.45; 0] B[0; 0] C[4.90545306122; 2.23655490318]
Centroid: CG[2.45215102041; 0.74551830106]
Coordinates of the circumscribed circle: U[1.225; 3.81102496876]
Coordinates of the inscribed circle: I[2.26; 0.49107791333]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 42.32767799349° = 42°19'36″ = 2.4032850982 rad
∠ B' = β' = 155.4965882626° = 155°29'45″ = 0.42876775285 rad
∠ C' = γ' = 162.1777337439° = 162°10'38″ = 0.31110641432 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     