# Triangle calculator SSS - result

### Acute scalene triangle.

Sides: a = 100   b = 90   c = 74.49

Area: T = 3225.546624223
Perimeter: p = 264.49
Semiperimeter: s = 132.245

Angle ∠ A = α = 74.20990056974° = 74°12'32″ = 1.29551914841 rad
Angle ∠ B = β = 60.00110653491° = 60°4″ = 1.0477216145 rad
Angle ∠ C = γ = 45.79899289535° = 45°47'24″ = 0.79991850245 rad

Height: ha = 64.51109248447
Height: hb = 71.6798805383
Height: hc = 86.6033470056

Median: ma = 65.76600186283
Median: mb = 75.82546665011
Median: mc = 87.53774775453

Vertex coordinates: A[74.49; 0] B[0; 0] C[49.99883897167; 86.6033470056]
Centroid: CG[41.49661299056; 28.8687823352]
Coordinates of the circumscribed circle: U[37.245; 36.23219197253]
Coordinates of the inscribed circle: I[42.245; 24.39106857895]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 105.7910994303° = 105°47'28″ = 1.29551914841 rad
∠ B' = β' = 119.9998934651° = 119°59'56″ = 1.0477216145 rad
∠ C' = γ' = 134.2110071047° = 134°12'36″ = 0.79991850245 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    