# 1.6 3.3 2.6 triangle

### Obtuse scalene triangle.

Sides: a = 1.6   b = 3.3   c = 2.6

Area: T = 2.04326315747
Perimeter: p = 7.5
Semiperimeter: s = 3.75

Angle ∠ A = α = 28.43334642212° = 28°26' = 0.49662575684 rad
Angle ∠ B = β = 100.8777039604° = 100°52'37″ = 1.76106364808 rad
Angle ∠ C = γ = 50.68994961747° = 50°41'22″ = 0.88546986044 rad

Height: ha = 2.55332894684
Height: hb = 1.23879585301
Height: hc = 1.57112550575

Median: ma = 2.86109439002
Median: mb = 1.39219410907
Median: mc = 2.24438805672

Inradius: r = 0.54547017533
Circumradius: R = 1.68801855227

Vertex coordinates: A[2.6; 0] B[0; 0] C[-0.30219230769; 1.57112550575]
Centroid: CG[0.7666025641; 0.52437516858]
Coordinates of the circumscribed circle: U[1.3; 1.06444357147]
Coordinates of the inscribed circle: I[0.45; 0.54547017533]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 151.5676535779° = 151°34' = 0.49662575684 rad
∠ B' = β' = 79.12329603959° = 79°7'23″ = 1.76106364808 rad
∠ C' = γ' = 129.3110503825° = 129°18'38″ = 0.88546986044 rad

# How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. ### 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.