# 45 32 31 triangle

### Obtuse scalene triangle.

Sides: a = 45   b = 32   c = 31

Area: T = 495.8999183302
Perimeter: p = 108
Semiperimeter: s = 54

Angle ∠ A = α = 91.15552351169° = 91°9'19″ = 1.59109589832 rad
Angle ∠ B = β = 45.31436127157° = 45°18'49″ = 0.79108717379 rad
Angle ∠ C = γ = 43.53111521674° = 43°31'52″ = 0.76597619325 rad

Height: ha = 22.04399637023
Height: hb = 30.99436989564
Height: hc = 31.99334956969

Median: ma = 22.05110770712
Median: mb = 35.17110107901
Median: mc = 35.83664339744

Inradius: r = 9.18333182093
Circumradius: R = 22.50545742679

Vertex coordinates: A[31; 0] B[0; 0] C[31.64551612903; 31.99334956969]
Centroid: CG[20.88217204301; 10.66444985656]
Coordinates of the circumscribed circle: U[15.5; 16.31658163442]
Coordinates of the inscribed circle: I[22; 9.18333182093]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 88.84547648831° = 88°50'41″ = 1.59109589832 rad
∠ B' = β' = 134.6866387284° = 134°41'11″ = 0.79108717379 rad
∠ C' = γ' = 136.4698847833° = 136°28'8″ = 0.76597619325 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.