# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 33   b = 45   c = 18.26

Area: T = 260.9265890863
Perimeter: p = 96.26
Semiperimeter: s = 48.13

Angle ∠ A = α = 39.42765090517° = 39°25'35″ = 0.68881223955 rad
Angle ∠ B = β = 1209.999582785° = 119°59'58″ = 2.09443878206 rad
Angle ∠ C = γ = 20.57439081633° = 20°34'26″ = 0.35990824375 rad

Height: ha = 15.81436903553
Height: hb = 11.59767062606
Height: hc = 28.57989584734

Median: ma = 30.11658396861
Median: mb = 14.31765568486
Median: mc = 38.38880593414

Inradius: r = 5.42112734441
Circumradius: R = 25.9810652888

Vertex coordinates: A[18.26; 0] B[0; 0] C[-16.54997918949; 28.57989584734]
Centroid: CG[0.5876736035; 9.52663194911]
Coordinates of the circumscribed circle: U[9.13; 24.32435980991]
Coordinates of the inscribed circle: I[3.13; 5.42112734441]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 140.5733490948° = 140°34'25″ = 0.68881223955 rad
∠ B' = β' = 600.0004172151° = 60°2″ = 2.09443878206 rad
∠ C' = γ' = 159.4266091837° = 159°25'34″ = 0.35990824375 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    