# 6.8 4.5 2.44 triangle

### Obtuse scalene triangle.

Sides: a = 6.8   b = 4.5   c = 2.44

Area: T = 2.24770018224
Perimeter: p = 13.74
Semiperimeter: s = 6.87

Angle ∠ A = α = 155.8439761662° = 155°50'23″ = 2.72199169465 rad
Angle ∠ B = β = 15.71550698893° = 15°42'54″ = 0.27442797117 rad
Angle ∠ C = γ = 8.4455168449° = 8°26'43″ = 0.14773959953 rad

Height: ha = 0.66108828889
Height: hb = 0.99986674766
Height: hc = 1.84218047725

Median: ma = 1.24216923935
Median: mb = 4.58663166049
Median: mc = 5.63552994597

Inradius: r = 0.32770745011
Circumradius: R = 8.3077069364

Vertex coordinates: A[2.44; 0] B[0; 0] C[6.54658196721; 1.84218047725]
Centroid: CG[2.9955273224; 0.61439349242]
Coordinates of the circumscribed circle: U[1.22; 8.21769946707]
Coordinates of the inscribed circle: I[2.37; 0.32770745011]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 24.16602383382° = 24°9'37″ = 2.72199169465 rad
∠ B' = β' = 164.2854930111° = 164°17'6″ = 0.27442797117 rad
∠ C' = γ' = 171.5554831551° = 171°33'17″ = 0.14773959953 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    