# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 22   b = 27   c = 30

Area: T = 286.5066435355
Perimeter: p = 79
Semiperimeter: s = 39.5

Angle ∠ A = α = 45.02656525491° = 45°1'32″ = 0.78658458848 rad
Angle ∠ B = β = 60.25502892152° = 60°15'1″ = 1.05215659221 rad
Angle ∠ C = γ = 74.72440582357° = 74°43'27″ = 1.30441808467 rad

Height: ha = 26.04660395778
Height: hb = 21.22326989152
Height: hc = 19.11004290237

Median: ma = 26.33443881645
Median: mb = 22.57876438098
Median: mc = 19.53220249846

Inradius: r = 7.25333274773
Circumradius: R = 15.54993889499

Vertex coordinates: A[30; 0] B[0; 0] C[10.91766666667; 19.11004290237]
Centroid: CG[13.63988888889; 6.36768096746]
Coordinates of the circumscribed circle: U[15; 4.09767666173]
Coordinates of the inscribed circle: I[12.5; 7.25333274773]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 134.9744347451° = 134°58'28″ = 0.78658458848 rad
∠ B' = β' = 119.7549710785° = 119°44'59″ = 1.05215659221 rad
∠ C' = γ' = 105.2765941764° = 105°16'33″ = 1.30441808467 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    