# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 10   b = 25   c = 28

Area: T = 124.1276699384
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 20.77218550453° = 20°46'19″ = 0.36325372623 rad
Angle ∠ B = β = 62.45114540405° = 62°27'5″ = 1.09899834957 rad
Angle ∠ C = γ = 96.77766909142° = 96°46'36″ = 1.68990718956 rad

Height: ha = 24.82553398768
Height: hb = 9.93301359507
Height: hc = 8.86661928132

Median: ma = 26.06772207955
Median: mb = 16.90441415044
Median: mc = 12.90334879006

Inradius: r = 3.94105301392
Circumradius: R = 14.09884978146

Vertex coordinates: A[28; 0] B[0; 0] C[4.625; 8.86661928132]
Centroid: CG[10.875; 2.95553976044]
Coordinates of the circumscribed circle: U[14; -1.66436227421]
Coordinates of the inscribed circle: I[6.5; 3.94105301392]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 159.2288144955° = 159°13'41″ = 0.36325372623 rad
∠ B' = β' = 117.5498545959° = 117°32'55″ = 1.09899834957 rad
∠ C' = γ' = 83.22333090858° = 83°13'24″ = 1.68990718956 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.