# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 46   b = 64   c = 37

Area: T = 837.1798856338
Perimeter: p = 147
Semiperimeter: s = 73.5

Angle ∠ A = α = 44.99875655988° = 44°59'51″ = 0.78553556751 rad
Angle ∠ B = β = 100.3440329606° = 100°20'25″ = 1.75112691242 rad
Angle ∠ C = γ = 34.66221047953° = 34°39'44″ = 0.60549678543 rad

Height: ha = 36.39990807104
Height: hb = 26.16218392606
Height: hc = 45.25329111534

Median: ma = 46.94114528961
Median: mb = 26.80548503074
Median: mc = 52.57113800466

Inradius: r = 11.39901885216
Circumradius: R = 32.52882940364

Vertex coordinates: A[37; 0] B[0; 0] C[-8.25767567568; 45.25329111534]
Centroid: CG[9.58110810811; 15.08443037178]
Coordinates of the circumscribed circle: U[18.5; 26.75551847857]
Coordinates of the inscribed circle: I[9.5; 11.39901885216]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135.0022434401° = 135°9″ = 0.78553556751 rad
∠ B' = β' = 79.66596703941° = 79°39'35″ = 1.75112691242 rad
∠ C' = γ' = 145.3387895205° = 145°20'16″ = 0.60549678543 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    