# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 6.4   b = 5.39   c = 3.74

Area: T = 10.06658813069
Perimeter: p = 15.53
Semiperimeter: s = 7.765

Angle ∠ A = α = 87.04331741374° = 87°2'35″ = 1.51991899801 rad
Angle ∠ B = β = 57.25328886245° = 57°15'10″ = 0.99992514128 rad
Angle ∠ C = γ = 35.70439372381° = 35°42'14″ = 0.62331512607 rad

Height: ha = 3.14655879084
Height: hb = 3.73550208931
Height: hc = 5.38328242283

Median: ma = 3.35985487938
Median: mb = 4.49656395541
Median: mc = 5.61333011678

Inradius: r = 1.29663143988
Circumradius: R = 3.20442658776

Vertex coordinates: A[3.74; 0] B[0; 0] C[3.46219652406; 5.38328242283]
Centroid: CG[2.40106550802; 1.79442747428]
Coordinates of the circumscribed circle: U[1.87; 2.60220030389]
Coordinates of the inscribed circle: I[2.375; 1.29663143988]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 92.95768258626° = 92°57'25″ = 1.51991899801 rad
∠ B' = β' = 122.7477111375° = 122°44'50″ = 0.99992514128 rad
∠ C' = γ' = 144.2966062762° = 144°17'46″ = 0.62331512607 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.