# 116 100 16.42 triangle

### Obtuse scalene triangle.

Sides: a = 116   b = 100   c = 16.42

Area: T = 198.6865611213
Perimeter: p = 232.42
Semiperimeter: s = 116.21

Angle ∠ A = α = 165.9955128164° = 165°59'42″ = 2.89771615287 rad
Angle ∠ B = β = 12.04217555239° = 12°2'30″ = 0.21101682816 rad
Angle ∠ C = γ = 1.96331163117° = 1°57'47″ = 0.03442628432 rad

Height: ha = 3.42656139864
Height: hb = 3.97437122243
Height: hc = 24.22004398555

Median: ma = 42.0810971947
Median: mb = 66.05215571353
Median: mc = 107.9844239128

Inradius: r = 1.71097118253
Circumradius: R = 239.6655065373

Vertex coordinates: A[16.42; 0] B[0; 0] C[113.4487515225; 24.22004398555]
Centroid: CG[43.28991717418; 8.06768132852]
Coordinates of the circumscribed circle: U[8.21; 239.524440264]
Coordinates of the inscribed circle: I[16.21; 1.71097118253]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 14.00548718356° = 14°18″ = 2.89771615287 rad
∠ B' = β' = 167.9588244476° = 167°57'30″ = 0.21101682816 rad
∠ C' = γ' = 178.0376883688° = 178°2'13″ = 0.03442628432 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    