# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 24.81   b = 29.59   c = 26.7

Area: T = 311.2633328344
Perimeter: p = 81.1
Semiperimeter: s = 40.55

Angle ∠ A = α = 51.99548640808° = 51°59'41″ = 0.90774815723 rad
Angle ∠ B = β = 70.01223682494° = 70°45″ = 1.22219463431 rad
Angle ∠ C = γ = 57.99327676698° = 57°59'34″ = 1.01221647382 rad

Height: ha = 25.09217636715
Height: hb = 21.03884135414
Height: hc = 23.31656051194

Median: ma = 25.30550395179
Median: mb = 21.10326307602
Median: mc = 23.81986817435

Inradius: r = 7.67660376904
Circumradius: R = 15.74332735766

Vertex coordinates: A[26.7; 0] B[0; 0] C[8.48804868914; 23.31656051194]
Centroid: CG[11.72768289638; 7.77218683731]
Coordinates of the circumscribed circle: U[13.35; 8.34443491603]
Coordinates of the inscribed circle: I[10.96; 7.67660376904]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 128.0055135919° = 128°19″ = 0.90774815723 rad
∠ B' = β' = 109.9887631751° = 109°59'15″ = 1.22219463431 rad
∠ C' = γ' = 122.007723233° = 122°26″ = 1.01221647382 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    