Triangle calculator SSS - result

Please enter the triangle sides:

Acute isosceles triangle.

Sides: a = 1   b = 23   c = 23

Area: T = 11.49772822876
Perimeter: p = 47
Semiperimeter: s = 23.5

Angle ∠ A = α = 2.49113171032° = 2°29'29″ = 0.04334816862 rad
Angle ∠ B = β = 88.75443414484° = 88°45'16″ = 1.54990554837 rad
Angle ∠ C = γ = 88.75443414484° = 88°45'16″ = 1.54990554837 rad

Height: ha = 22.99545645751
Height: hb = 10.9997636772
Height: hc = 10.9997636772

Median: ma = 22.99545645751
Median: mb = 11.52217186218
Median: mc = 11.52217186218

Inradius: r = 0.48992460548
Circumradius: R = 11.50327183548

Vertex coordinates: A[23; 0] B[0; 0] C[0.02217391304; 10.9997636772]
Centroid: CG[7.67439130435; 0.33332545591]
Coordinates of the circumscribed circle: U[11.5; 0.25500590947]
Coordinates of the inscribed circle: I[0.5; 0.48992460548]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 177.5098682897° = 177°30'31″ = 0.04334816862 rad
∠ B' = β' = 91.24656585516° = 91°14'44″ = 1.54990554837 rad
∠ C' = γ' = 91.24656585516° = 91°14'44″ = 1.54990554837 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     