# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 35   b = 33   c = 5.37

Area: T = 84.45876840785
Perimeter: p = 73.37
Semiperimeter: s = 36.685

Angle ∠ A = α = 107.6599518901° = 107°35'58″ = 1.87879658784 rad
Angle ∠ B = β = 63.99109800634° = 63°59'28″ = 1.11768532937 rad
Angle ∠ C = γ = 8.41095010356° = 8°24'34″ = 0.14767734815 rad

Height: ha = 4.82661533759
Height: hb = 5.11986475199
Height: hc = 31.45553758207

Median: ma = 15.89655481189
Median: mb = 18.83326432027
Median: mc = 33.9098564921

Inradius: r = 2.30222402638
Circumradius: R = 18.35993419227

Vertex coordinates: A[5.37; 0] B[0; 0] C[15.34879422719; 31.45553758207]
Centroid: CG[6.90659807573; 10.48551252736]
Coordinates of the circumscribed circle: U[2.685; 18.16219440269]
Coordinates of the inscribed circle: I[3.685; 2.30222402638]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 72.44004810989° = 72°24'2″ = 1.87879658784 rad
∠ B' = β' = 116.0099019937° = 116°32″ = 1.11768532937 rad
∠ C' = γ' = 171.5990498964° = 171°35'26″ = 0.14767734815 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    