# 8 14 14 triangle

### Acute isosceles triangle.

Sides: a = 8   b = 14   c = 14

Area: T = 53.666563146
Perimeter: p = 36
Semiperimeter: s = 18

Angle ∠ A = α = 33.2033099198° = 33°12'11″ = 0.58795034029 rad
Angle ∠ B = β = 73.3988450401° = 73°23'54″ = 1.28110446254 rad
Angle ∠ C = γ = 73.3988450401° = 73°23'54″ = 1.28110446254 rad

Height: ha = 13.4166407865
Height: hb = 7.667651878
Height: hc = 7.667651878

Median: ma = 13.4166407865
Median: mb = 9
Median: mc = 9

Inradius: r = 2.981142397
Circumradius: R = 7.30444887265

Vertex coordinates: A[14; 0] B[0; 0] C[2.28657142857; 7.667651878]
Centroid: CG[5.42985714286; 2.556550626]
Coordinates of the circumscribed circle: U[7; 2.0876996779]
Coordinates of the inscribed circle: I[4; 2.981142397]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 146.7976900802° = 146°47'49″ = 0.58795034029 rad
∠ B' = β' = 106.6021549599° = 106°36'6″ = 1.28110446254 rad
∠ C' = γ' = 106.6021549599° = 106°36'6″ = 1.28110446254 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.