# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 3.03   b = 1.28   c = 2.75

Area: T = 1.76599928977
Perimeter: p = 7.06
Semiperimeter: s = 3.53

Angle ∠ A = α = 89.83772276802° = 89°50'14″ = 1.56879554139 rad
Angle ∠ B = β = 24.98987651097° = 24°59'20″ = 0.43661362272 rad
Angle ∠ C = γ = 65.17440072102° = 65°10'26″ = 1.13875010125 rad

Height: ha = 1.16217114836
Height: hb = 2.75499889027
Height: hc = 1.28799948347

Median: ma = 1.51882967431
Median: mb = 2.8221719334
Median: mc = 1.87659064476

Inradius: r = 0.49985815574
Circumradius: R = 1.51550061136

Vertex coordinates: A[2.75; 0] B[0; 0] C[2.74663636364; 1.28799948347]
Centroid: CG[1.83221212121; 0.42766649449]
Coordinates of the circumscribed circle: U[1.375; 0.63660963169]
Coordinates of the inscribed circle: I[2.25; 0.49985815574]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90.16327723198° = 90°9'46″ = 1.56879554139 rad
∠ B' = β' = 155.011123489° = 155°40″ = 0.43661362272 rad
∠ C' = γ' = 114.826599279° = 114°49'34″ = 1.13875010125 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   