# 5 28 29 triangle

### Obtuse scalene triangle.

Sides: a = 5   b = 28   c = 29

Area: T = 69.54113546029
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 9.86224891647° = 9°51'45″ = 0.17221329084 rad
Angle ∠ B = β = 73.57550829667° = 73°34'30″ = 1.28441274452 rad
Angle ∠ C = γ = 96.56224278686° = 96°33'45″ = 1.68553323 rad

Height: ha = 27.81765418411
Height: hb = 4.96772396145
Height: hc = 4.79659554899

Median: ma = 28.3954541729
Median: mb = 15.39548043183
Median: mc = 13.93773598648

Inradius: r = 2.24332695033
Circumradius: R = 14.59656317043

Vertex coordinates: A[29; 0] B[0; 0] C[1.41437931034; 4.79659554899]
Centroid: CG[10.13879310345; 1.599865183]
Coordinates of the circumscribed circle: U[14.5; -1.66880721948]
Coordinates of the inscribed circle: I[3; 2.24332695033]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 170.1387510835° = 170°8'15″ = 0.17221329084 rad
∠ B' = β' = 106.4254917033° = 106°25'30″ = 1.28441274452 rad
∠ C' = γ' = 83.43875721314° = 83°26'15″ = 1.68553323 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.