# 14 22 28 triangle

### Obtuse scalene triangle.

Sides: a = 14   b = 22   c = 28

Area: T = 151.7899327688
Perimeter: p = 64
Semiperimeter: s = 32

Angle ∠ A = α = 29.52662652473° = 29°31'35″ = 0.51553305444 rad
Angle ∠ B = β = 50.75438670503° = 50°45'14″ = 0.88658220881 rad
Angle ∠ C = γ = 99.72198677024° = 99°43'12″ = 1.74404400211 rad

Height: ha = 21.68441896697
Height: hb = 13.79990297898
Height: hc = 10.84220948349

Median: ma = 24.18767732449
Median: mb = 19.20993727123
Median: mc = 12

Inradius: r = 4.74334164903
Circumradius: R = 14.20438971569

Vertex coordinates: A[28; 0] B[0; 0] C[8.85771428571; 10.84220948349]
Centroid: CG[12.28657142857; 3.61440316116]
Coordinates of the circumscribed circle: U[14; -2.3988060559]
Coordinates of the inscribed circle: I[10; 4.74334164903]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.4743734753° = 150°28'25″ = 0.51553305444 rad
∠ B' = β' = 129.246613295° = 129°14'46″ = 0.88658220881 rad
∠ C' = γ' = 80.28801322976° = 80°16'48″ = 1.74404400211 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.