# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse isosceles triangle.

Sides: a = 0.02   b = 0.02   c = 0.03

Area: T = 00.0001984313
Perimeter: p = 0.07
Semiperimeter: s = 0.035

Angle ∠ A = α = 41.41096221093° = 41°24'35″ = 0.72327342478 rad
Angle ∠ B = β = 41.41096221093° = 41°24'35″ = 0.72327342478 rad
Angle ∠ C = γ = 97.18107557815° = 97°10'51″ = 1.6966124158 rad

Height: ha = 0.02198431348
Height: hb = 0.02198431348
Height: hc = 0.01332287566

Median: ma = 0.02334520788
Median: mb = 0.02334520788
Median: mc = 0.01332287566

Inradius: r = 0.00656694671
Circumradius: R = 0.01551185789

Vertex coordinates: A[0.03; 0] B[0; 0] C[0.015; 0.01332287566]
Centroid: CG[0.015; 0.00444095855]
Coordinates of the circumscribed circle: U[0.015; -0.00218898224]
Coordinates of the inscribed circle: I[0.015; 0.00656694671]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 138.5990377891° = 138°35'25″ = 0.72327342478 rad
∠ B' = β' = 138.5990377891° = 138°35'25″ = 0.72327342478 rad
∠ C' = γ' = 82.81992442185° = 82°49'9″ = 1.6966124158 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    