# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 18.1   b = 15.8   c = 2.66

Area: T = 11.29899158119
Perimeter: p = 36.56
Semiperimeter: s = 18.28

Angle ∠ A = α = 147.5032903557° = 147°30'10″ = 2.57444113233 rad
Angle ∠ B = β = 27.96985383837° = 27°58'7″ = 0.48881430818 rad
Angle ∠ C = γ = 4.52985580591° = 4°31'43″ = 0.07990382485 rad

Height: ha = 1.24875045096
Height: hb = 1.42991032673
Height: hc = 8.48986585052

Median: ma = 6.81658124974
Median: mb = 10.24436712169
Median: mc = 16.93768267394

Inradius: r = 0.61876102742
Circumradius: R = 16.8454828887

Vertex coordinates: A[2.66; 0] B[0; 0] C[15.98660150376; 8.48986585052]
Centroid: CG[6.21553383459; 2.83295528351]
Coordinates of the circumscribed circle: U[1.33; 16.79222410723]
Coordinates of the inscribed circle: I[2.48; 0.61876102742]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 32.49770964428° = 32°29'50″ = 2.57444113233 rad
∠ B' = β' = 152.0311461616° = 152°1'53″ = 0.48881430818 rad
∠ C' = γ' = 175.4711441941° = 175°28'17″ = 0.07990382485 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.