# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 9   b = 7.33   c = 10

Area: T = 31.82218351773
Perimeter: p = 26.33
Semiperimeter: s = 13.165

Angle ∠ A = α = 60.25774001485° = 60°15'27″ = 1.05216900313 rad
Angle ∠ B = β = 45.00436554438° = 45°13″ = 0.78554619629 rad
Angle ∠ C = γ = 74.73989444077° = 74°44'20″ = 1.30444406594 rad

Height: ha = 7.07215189283
Height: hb = 8.68326289706
Height: hc = 6.36443670355

Median: ma = 7.52442574384
Median: mb = 8.7798825377
Median: mc = 6.50987978921

Inradius: r = 2.41771542102
Circumradius: R = 5.18327620589

Vertex coordinates: A[10; 0] B[0; 0] C[6.3643555; 6.36443670355]
Centroid: CG[5.45545183333; 2.12114556785]
Coordinates of the circumscribed circle: U[5; 1.36441930064]
Coordinates of the inscribed circle: I[5.835; 2.41771542102]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 119.7432599852° = 119°44'33″ = 1.05216900313 rad
∠ B' = β' = 134.9966344556° = 134°59'47″ = 0.78554619629 rad
∠ C' = γ' = 105.2611055592° = 105°15'40″ = 1.30444406594 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    