Triangle calculator SSS - result
Acute scalene triangle.
Sides: a = 11.4 b = 12.8 c = 10.27Area: T = 55.73656982808
Perimeter: p = 34.47
Semiperimeter: s = 17.235
Angle ∠ A = α = 57.99220934472° = 57°59'32″ = 1.01221529708 rad
Angle ∠ B = β = 72.19767849441° = 72°11'48″ = 1.26600716066 rad
Angle ∠ C = γ = 49.81111216087° = 49°48'40″ = 0.86993680762 rad
Height: ha = 9.77881926808
Height: hb = 8.70987028564
Height: hc = 10.85440795094
Median: ma = 10.10877420822
Median: mb = 8.76110758472
Median: mc = 10.97986964162
Inradius: r = 3.23438670311
Circumradius: R = 6.72218965861
Vertex coordinates: A[10.27; 0] B[0; 0] C[3.48655355404; 10.85440795094]
Centroid: CG[4.58551785135; 3.61880265031]
Coordinates of the circumscribed circle: U[5.135; 4.33877031612]
Coordinates of the inscribed circle: I[4.435; 3.23438670311]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 122.0087906553° = 122°28″ = 1.01221529708 rad
∠ B' = β' = 107.8033215056° = 107°48'12″ = 1.26600716066 rad
∠ C' = γ' = 130.1898878391° = 130°11'20″ = 0.86993680762 rad
Calculate another triangle
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

6. Inradius

7. Circumradius
