# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 17   b = 19   c = 28

Area: T = 157.9877341265
Perimeter: p = 64
Semiperimeter: s = 32

Angle ∠ A = α = 36.43769168605° = 36°26'13″ = 0.63659441685 rad
Angle ∠ B = β = 41.59112771434° = 41°35'29″ = 0.72659047263 rad
Angle ∠ C = γ = 101.9721805996° = 101°58'19″ = 1.78797437588 rad

Height: ha = 18.58767460312
Height: hb = 16.6330246449
Height: hc = 11.28548100904

Median: ma = 22.36662692463
Median: mb = 21.12546301743
Median: mc = 11.35878166916

Inradius: r = 4.93771044145
Circumradius: R = 14.31112731811

Vertex coordinates: A[28; 0] B[0; 0] C[12.71442857143; 11.28548100904]
Centroid: CG[13.57114285714; 3.76216033635]
Coordinates of the circumscribed circle: U[14; -2.96985922698]
Coordinates of the inscribed circle: I[13; 4.93771044145]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 143.5633083139° = 143°33'47″ = 0.63659441685 rad
∠ B' = β' = 138.4098722857° = 138°24'31″ = 0.72659047263 rad
∠ C' = γ' = 78.02881940039° = 78°1'41″ = 1.78797437588 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.