# 2.646 2.449 2.236 triangle

### Acute scalene triangle.

Sides: a = 2.6465751   b = 2.449949   c = 2.2366068

Area: T = 2.55495098005
Perimeter: p = 7.3311309
Semiperimeter: s = 3.66656545

Angle ∠ A = α = 68.58332716603° = 68°35' = 1.19770039023 rad
Angle ∠ B = β = 59.53296526719° = 59°31'47″ = 1.03989884417 rad
Angle ∠ C = γ = 51.88770756678° = 51°53'13″ = 0.90656003096 rad

Height: ha = 1.92772484829
Height: hb = 2.08216658165
Height: hc = 2.28803508663

Median: ma = 1.9366491955
Median: mb = 2.12113200872
Median: mc = 2.29112877999

Inradius: r = 0.69655128478
Circumradius: R = 1.42109963723

Vertex coordinates: A[2.2366068; 0] B[0; 0] C[1.34216401457; 2.28803508663]
Centroid: CG[1.19325693819; 0.76601169554]
Coordinates of the circumscribed circle: U[1.1188034; 0.87770579598]
Coordinates of the inscribed circle: I[1.21661645; 0.69655128478]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 111.417672834° = 111°25' = 1.19770039023 rad
∠ B' = β' = 120.4770347328° = 120°28'13″ = 1.03989884417 rad
∠ C' = γ' = 128.1132924332° = 128°6'47″ = 0.90656003096 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.