# Triangle calculator ASA

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°

### Equilateral triangle.

Sides: a = 200   b = 200   c = 200

Area: T = 17320.50880757
Perimeter: p = 600
Semiperimeter: s = 300

Angle ∠ A = α = 60° = 1.04771975512 rad
Angle ∠ B = β = 60° = 1.04771975512 rad
Angle ∠ C = γ = 60° = 1.04771975512 rad

Height: ha = 173.2055080757
Height: hb = 173.2055080757
Height: hc = 173.2055080757

Median: ma = 173.2055080757
Median: mb = 173.2055080757
Median: mc = 173.2055080757

Vertex coordinates: A[200; 0] B[0; 0] C[100; 173.2055080757]
Centroid: CG[100; 57.7355026919]
Coordinates of the circumscribed circle: U[100; 57.7355026919]
Coordinates of the inscribed circle: I[100; 57.7355026919]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120° = 1.04771975512 rad
∠ B' = β' = 120° = 1.04771975512 rad
∠ C' = γ' = 120° = 1.04771975512 rad

# How did we calculate this triangle?

### 3. By using the law of sines, we calculate last unknown side b

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.