# 2 16 16 triangle

### Acute isosceles triangle.

Sides: a = 2   b = 16   c = 16

Area: T = 15.96987194227
Perimeter: p = 34
Semiperimeter: s = 17

Angle ∠ A = α = 7.16766433969° = 7°10' = 0.12550815236 rad
Angle ∠ B = β = 86.41766783015° = 86°25' = 1.5088255565 rad
Angle ∠ C = γ = 86.41766783015° = 86°25' = 1.5088255565 rad

Height: ha = 15.96987194227
Height: hb = 1.99660899278
Height: hc = 1.99660899278

Median: ma = 15.96987194227
Median: mb = 8.12440384046
Median: mc = 8.12440384046

Inradius: r = 0.93993364366
Circumradius: R = 8.01656709259

Vertex coordinates: A[16; 0] B[0; 0] C[0.125; 1.99660899278]
Centroid: CG[5.375; 0.66553633093]
Coordinates of the circumscribed circle: U[8; 0.50109794329]
Coordinates of the inscribed circle: I[1; 0.93993364366]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 172.8333356603° = 172°50' = 0.12550815236 rad
∠ B' = β' = 93.58333216985° = 93°35' = 1.5088255565 rad
∠ C' = γ' = 93.58333216985° = 93°35' = 1.5088255565 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.