# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 24   b = 26   c = 29

Area: T = 294.5955379292
Perimeter: p = 79
Semiperimeter: s = 39.5

Angle ∠ A = α = 51.39107833262° = 51°23'27″ = 0.89769383742 rad
Angle ∠ B = β = 57.83771442373° = 57°50'14″ = 1.00994485969 rad
Angle ∠ C = γ = 70.77220724365° = 70°46'19″ = 1.23552056825 rad

Height: ha = 24.5549614941
Height: hb = 22.66111830224
Height: hc = 20.31769227098

Median: ma = 24.78991105125
Median: mb = 23.22771392987
Median: mc = 20.39899485041

Inradius: r = 7.45881108681
Circumradius: R = 15.35766563429

Vertex coordinates: A[29; 0] B[0; 0] C[12.7765862069; 20.31769227098]
Centroid: CG[13.92552873563; 6.77223075699]
Coordinates of the circumscribed circle: U[14.5; 5.05773603822]
Coordinates of the inscribed circle: I[13.5; 7.45881108681]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 128.6099216674° = 128°36'33″ = 0.89769383742 rad
∠ B' = β' = 122.1632855763° = 122°9'46″ = 1.00994485969 rad
∠ C' = γ' = 109.2287927563° = 109°13'41″ = 1.23552056825 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    