Triangle calculator SSS - result

Please enter the triangle sides:

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?

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    