Triangle calculator SSS - result

Please enter the triangle sides:

Acute isosceles triangle.

Sides: a = 7.07   b = 7.07   c = 6.32

Area: T = 19.98554199375
Perimeter: p = 20.46
Semiperimeter: s = 10.23

Angle ∠ A = α = 63.45112578791° = 63°27'5″ = 1.10774333645 rad
Angle ∠ B = β = 63.45112578791° = 63°27'5″ = 1.10774333645 rad
Angle ∠ C = γ = 53.09774842418° = 53°5'51″ = 0.92767259245 rad

Height: ha = 5.65435841407
Height: hb = 5.65435841407
Height: hc = 6.32444999802

Median: ma = 5.69880193927
Median: mb = 5.69880193927
Median: mc = 6.32444999802

Inradius: r = 1.95436089871
Circumradius: R = 3.95216878928

Vertex coordinates: A[6.32; 0] B[0; 0] C[3.16; 6.32444999802]
Centroid: CG[3.16; 2.10881666601]
Coordinates of the circumscribed circle: U[3.16; 2.37328120874]
Coordinates of the inscribed circle: I[3.16; 1.95436089871]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 116.5498742121° = 116°32'55″ = 1.10774333645 rad
∠ B' = β' = 116.5498742121° = 116°32'55″ = 1.10774333645 rad
∠ C' = γ' = 126.9032515758° = 126°54'9″ = 0.92767259245 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     