# 14 14 27 triangle

### Obtuse isosceles triangle.

Sides: a = 14   b = 14   c = 27

Area: T = 50.05993397879
Perimeter: p = 55
Semiperimeter: s = 27.5

Angle ∠ A = α = 15.35988855808° = 15°21'32″ = 0.26880631228 rad
Angle ∠ B = β = 15.35988855808° = 15°21'32″ = 0.26880631228 rad
Angle ∠ C = γ = 149.2822228838° = 149°16'56″ = 2.60554664079 rad

Height: ha = 7.15113342554
Height: hb = 7.15113342554
Height: hc = 3.70880992435

Median: ma = 20.33546994077
Median: mb = 20.33546994077
Median: mc = 3.70880992435

Inradius: r = 1.82203396287
Circumradius: R = 26.42986346086

Vertex coordinates: A[27; 0] B[0; 0] C[13.5; 3.70880992435]
Centroid: CG[13.5; 1.23660330812]
Coordinates of the circumscribed circle: U[13.5; -22.7210535365]
Coordinates of the inscribed circle: I[13.5; 1.82203396287]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 164.6411114419° = 164°38'28″ = 0.26880631228 rad
∠ B' = β' = 164.6411114419° = 164°38'28″ = 0.26880631228 rad
∠ C' = γ' = 30.71877711616° = 30°43'4″ = 2.60554664079 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.