# 4 29 29 triangle

### Acute isosceles triangle.

Sides: a = 4   b = 29   c = 29

Area: T = 57.8621904566
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 7.90991442442° = 7°54'33″ = 0.13880406081 rad
Angle ∠ B = β = 86.04554278779° = 86°2'44″ = 1.50217760228 rad
Angle ∠ C = γ = 86.04554278779° = 86°2'44″ = 1.50217760228 rad

Height: ha = 28.9310952283
Height: hb = 3.9990476177
Height: hc = 3.9990476177

Median: ma = 28.9310952283
Median: mb = 14.77332867027
Median: mc = 14.77332867027

Inradius: r = 1.86765130505
Circumradius: R = 14.53546062545

Vertex coordinates: A[29; 0] B[0; 0] C[0.2765862069; 3.9990476177]
Centroid: CG[9.75986206897; 1.33301587257]
Coordinates of the circumscribed circle: U[14.5; 1.00223866382]
Coordinates of the inscribed circle: I[2; 1.86765130505]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 172.0910855756° = 172°5'27″ = 0.13880406081 rad
∠ B' = β' = 93.95545721221° = 93°57'16″ = 1.50217760228 rad
∠ C' = γ' = 93.95545721221° = 93°57'16″ = 1.50217760228 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.