# 3 29 29 triangle

### Acute isosceles triangle.

Sides: a = 3   b = 29   c = 29

Area: T = 43.44217713727
Perimeter: p = 61
Semiperimeter: s = 30.5

Angle ∠ A = α = 5.93297956944° = 5°55'47″ = 0.10334944588 rad
Angle ∠ B = β = 87.03551021528° = 87°2'6″ = 1.51990490974 rad
Angle ∠ C = γ = 87.03551021528° = 87°2'6″ = 1.51990490974 rad

Height: ha = 28.96111809151
Height: hb = 2.99659842326
Height: hc = 2.99659842326

Median: ma = 28.96111809151
Median: mb = 14.65443508898
Median: mc = 14.65443508898

Inradius: r = 1.42443203729
Circumradius: R = 14.51994355587

Vertex coordinates: A[29; 0] B[0; 0] C[0.15551724138; 2.99659842326]
Centroid: CG[9.71883908046; 0.99986614109]
Coordinates of the circumscribed circle: U[14.5; 0.75110052875]
Coordinates of the inscribed circle: I[1.5; 1.42443203729]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 174.0770204306° = 174°4'13″ = 0.10334944588 rad
∠ B' = β' = 92.96548978472° = 92°57'54″ = 1.51990490974 rad
∠ C' = γ' = 92.96548978472° = 92°57'54″ = 1.51990490974 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.