# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 10.77   b = 5.39   c = 12.04

Area: T = 29.02551425113
Perimeter: p = 28.2
Semiperimeter: s = 14.1

Angle ∠ A = α = 63.44765907224° = 63°26'48″ = 1.10773519073 rad
Angle ∠ B = β = 26.5954567277° = 26°35'40″ = 0.46441627621 rad
Angle ∠ C = γ = 89.95988420006° = 89°57'32″ = 1.57700779842 rad

Height: ha = 5.39899986093
Height: hb = 10.77699972213
Height: hc = 4.82114522444

Median: ma = 7.61663393438
Median: mb = 11.11001903137
Median: mc = 6.02334624594

Inradius: r = 2.05985207455
Circumradius: R = 6.02200015532

Vertex coordinates: A[12.04; 0] B[0; 0] C[9.63304983389; 4.82114522444]
Centroid: CG[7.22334994463; 1.60771507481]
Coordinates of the circumscribed circle: U[6.02; 0.00443244232]
Coordinates of the inscribed circle: I[8.71; 2.05985207455]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 116.5533409278° = 116°33'12″ = 1.10773519073 rad
∠ B' = β' = 153.4055432723° = 153°24'20″ = 0.46441627621 rad
∠ C' = γ' = 90.04111579994° = 90°2'28″ = 1.57700779842 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 ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.