# 22 22 29 triangle

### Acute isosceles triangle.

Sides: a = 22   b = 22   c = 29

Area: T = 239.9088185563
Perimeter: p = 73
Semiperimeter: s = 36.5

Angle ∠ A = α = 48.76994228451° = 48°46'10″ = 0.85111870029 rad
Angle ∠ B = β = 48.76994228451° = 48°46'10″ = 0.85111870029 rad
Angle ∠ C = γ = 82.46111543097° = 82°27'40″ = 1.43992186477 rad

Height: ha = 21.81098350512
Height: hb = 21.81098350512
Height: hc = 16.54553921078

Median: ma = 23.27701525564
Median: mb = 23.27701525564
Median: mc = 16.54553921078

Inradius: r = 6.57328270017
Circumradius: R = 14.62664288222

Vertex coordinates: A[29; 0] B[0; 0] C[14.5; 16.54553921078]
Centroid: CG[14.5; 5.51551307026]
Coordinates of the circumscribed circle: U[14.5; 1.91989632856]
Coordinates of the inscribed circle: I[14.5; 6.57328270017]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 131.2310577155° = 131°13'50″ = 0.85111870029 rad
∠ B' = β' = 131.2310577155° = 131°13'50″ = 0.85111870029 rad
∠ C' = γ' = 97.53988456903° = 97°32'20″ = 1.43992186477 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.