7.07 4.47 7.07 triangle

Acute isosceles triangle.

Sides: a = 7.07   b = 4.47   c = 7.07

Area: T = 14.9911115679
Perimeter: p = 18.61
Semiperimeter: s = 9.305

Angle ∠ A = α = 71.57112896572° = 71°34'17″ = 1.24991546544 rad
Angle ∠ B = β = 36.85774206856° = 36°51'27″ = 0.64332833448 rad
Angle ∠ C = γ = 71.57112896572° = 71°34'17″ = 1.24991546544 rad

Height: ha = 4.2410768226
Height: hb = 6.70774343083
Height: hc = 4.2410768226

Median: ma = 4.74220117039
Median: mb = 6.70774343083
Median: mc = 4.74220117039

Inradius: r = 1.61110817495
Circumradius: R = 3.72660819639

Vertex coordinates: A[7.07; 0] B[0; 0] C[5.65769236209; 4.2410768226]
Centroid: CG[4.24223078736; 1.41435894087]
Coordinates of the circumscribed circle: U[3.535; 1.17879056845]
Coordinates of the inscribed circle: I[4.835; 1.61110817495]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 108.4298710343° = 108°25'43″ = 1.24991546544 rad
∠ B' = β' = 143.1432579314° = 143°8'33″ = 0.64332833448 rad
∠ C' = γ' = 108.4298710343° = 108°25'43″ = 1.24991546544 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     