Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse isosceles triangle.

Sides: a = 9.49   b = 6.71   c = 6.71

Area: T = 22.51220498034
Perimeter: p = 22.91
Semiperimeter: s = 11.455

Angle ∠ A = α = 90.00875717202° = 90°27″ = 1.57109284782 rad
Angle ∠ B = β = 44.99662141399° = 44°59'46″ = 0.78553320877 rad
Angle ∠ C = γ = 44.99662141399° = 44°59'46″ = 0.78553320877 rad

Height: ha = 4.74443729828
Height: hb = 6.71099999414
Height: hc = 6.71099999414

Median: ma = 4.74443729828
Median: mb = 7.50224046145
Median: mc = 7.50224046145

Inradius: r = 1.96552596948
Circumradius: R = 4.74550000414

Vertex coordinates: A[6.71; 0] B[0; 0] C[6.71108867362; 6.71099999414]
Centroid: CG[4.47436289121; 2.23766666471]
Coordinates of the circumscribed circle: U[3.355; 3.35554433974]
Coordinates of the inscribed circle: I[4.745; 1.96552596948]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 89.99224282798° = 89°59'33″ = 1.57109284782 rad
∠ B' = β' = 135.004378586° = 135°14″ = 0.78553320877 rad
∠ C' = γ' = 135.004378586° = 135°14″ = 0.78553320877 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     