# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 14   b = 23   c = 23

Area: T = 153.3622316101
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 35.43878637468° = 35°26'16″ = 0.61985074023 rad
Angle ∠ B = β = 72.28110681266° = 72°16'52″ = 1.26215426257 rad
Angle ∠ C = γ = 72.28110681266° = 72°16'52″ = 1.26215426257 rad

Height: ha = 21.90989023002
Height: hb = 13.3365853574
Height: hc = 13.3365853574

Median: ma = 21.90989023002
Median: mb = 15.17439909055
Median: mc = 15.17439909055

Inradius: r = 5.11220772034
Circumradius: R = 12.07327180383

Vertex coordinates: A[23; 0] B[0; 0] C[4.26108695652; 13.3365853574]
Centroid: CG[9.08769565217; 4.44552845247]
Coordinates of the circumscribed circle: U[11.5; 3.67443054899]
Coordinates of the inscribed circle: I[7; 5.11220772034]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 144.5622136253° = 144°33'44″ = 0.61985074023 rad
∠ B' = β' = 107.7198931873° = 107°43'8″ = 1.26215426257 rad
∠ C' = γ' = 107.7198931873° = 107°43'8″ = 1.26215426257 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    