# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 12   b = 29   c = 30

Area: T = 172.698753183
Perimeter: p = 71
Semiperimeter: s = 35.5

Angle ∠ A = α = 23.39111307904° = 23°23'28″ = 0.40882522481 rad
Angle ∠ B = β = 73.62437104336° = 73°37'25″ = 1.28549761546 rad
Angle ∠ C = γ = 82.98551587759° = 82°59'7″ = 1.44883642509 rad

Height: ha = 28.78329219716
Height: hb = 11.91101746089
Height: hc = 11.51331687886

Median: ma = 28.88877136513
Median: mb = 17.6566443583
Median: mc = 16.35554272338

Inradius: r = 4.86547192065
Circumradius: R = 15.11331285569

Vertex coordinates: A[30; 0] B[0; 0] C[3.38333333333; 11.51331687886]
Centroid: CG[11.12877777778; 3.83877229295]
Coordinates of the circumscribed circle: U[15; 1.84657125393]
Coordinates of the inscribed circle: I[6.5; 4.86547192065]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 156.609886921° = 156°36'32″ = 0.40882522481 rad
∠ B' = β' = 106.3766289566° = 106°22'35″ = 1.28549761546 rad
∠ C' = γ' = 97.01548412241° = 97°53″ = 1.44883642509 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.