# 6 28 29 triangle

### Obtuse scalene triangle.

Sides: a = 6   b = 28   c = 29

Area: T = 83.8365776969
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 11.91768568685° = 11°55'1″ = 0.20879883888 rad
Angle ∠ B = β = 74.5499821433° = 74°29'59″ = 1.33002671762 rad
Angle ∠ C = γ = 93.58333216985° = 93°35' = 1.63333370886 rad

Height: ha = 27.94552589897
Height: hb = 5.98882697835
Height: hc = 5.7821777722

Median: ma = 28.34660755661
Median: mb = 15.57224115024
Median: mc = 14.13332940251

Inradius: r = 2.66114532371
Circumradius: R = 14.52884035532

Vertex coordinates: A[29; 0] B[0; 0] C[1.60334482759; 5.7821777722]
Centroid: CG[10.20111494253; 1.92772592407]
Coordinates of the circumscribed circle: U[14.5; -0.90880252221]
Coordinates of the inscribed circle: I[3.5; 2.66114532371]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 168.0833143131° = 168°4'59″ = 0.20879883888 rad
∠ B' = β' = 105.5500178567° = 105°30'1″ = 1.33002671762 rad
∠ C' = γ' = 86.41766783015° = 86°25' = 1.63333370886 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.