# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 5   b = 15   c = 17

Area: T = 36.21103231137
Perimeter: p = 37
Semiperimeter: s = 18.5

Angle ∠ A = α = 16.49992344912° = 16°29'57″ = 0.28879659659 rad
Angle ∠ B = β = 58.43107033639° = 58°25'51″ = 1.0219808158 rad
Angle ∠ C = γ = 105.0770062145° = 105°4'12″ = 1.83438185297 rad

Height: ha = 14.48441292455
Height: hb = 4.82880430818
Height: hc = 4.26600380134

Median: ma = 15.83550876221
Median: mb = 10.03774299499
Median: mc = 7.26329195232

Inradius: r = 1.95773147629
Circumradius: R = 8.80327383517

Vertex coordinates: A[17; 0] B[0; 0] C[2.61876470588; 4.26600380134]
Centroid: CG[6.53992156863; 1.42200126711]
Coordinates of the circumscribed circle: U[8.5; -2.28987119714]
Coordinates of the inscribed circle: I[3.5; 1.95773147629]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 163.5010765509° = 163°30'3″ = 0.28879659659 rad
∠ B' = β' = 121.5699296636° = 121°34'9″ = 1.0219808158 rad
∠ C' = γ' = 74.93299378551° = 74°55'48″ = 1.83438185297 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.