# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 11.4   b = 12.8   c = 10.27

Area: 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

# 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 ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.