# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 9.64   b = 6.2   c = 7.5

Area: T = 23.24658342933
Perimeter: p = 23.34
Semiperimeter: s = 11.67

Angle ∠ A = α = 88.91553815635° = 88°54'55″ = 1.55218661639 rad
Angle ∠ B = β = 40.0198752268° = 40°1'7″ = 0.69884589896 rad
Angle ∠ C = γ = 51.06658661685° = 51°3'57″ = 0.89112675 rad

Height: ha = 4.82327871978
Height: hb = 7.49986562236
Height: hc = 6.19988891449

Median: ma = 4.91104582271
Median: mb = 8.06110049001
Median: mc = 7.18548660391

Inradius: r = 1.99219309591
Circumradius: R = 4.8210863755

Vertex coordinates: A[7.5; 0] B[0; 0] C[7.383264; 6.19988891449]
Centroid: CG[4.961088; 2.06662963816]
Coordinates of the circumscribed circle: U[3.75; 3.03295589357]
Coordinates of the inscribed circle: I[5.47; 1.99219309591]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 91.08546184365° = 91°5'5″ = 1.55218661639 rad
∠ B' = β' = 139.9811247732° = 139°58'52″ = 0.69884589896 rad
∠ C' = γ' = 128.9344133832° = 128°56'3″ = 0.89112675 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
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