# 4.5 3.36 3.36 triangle

### Acute isosceles triangle.

Sides: a = 4.5   b = 3.36   c = 3.36

Area: T = 5.61546855433
Perimeter: p = 11.22
Semiperimeter: s = 5.61

Angle ∠ A = α = 84.07990126579° = 84°4'44″ = 1.46774556027 rad
Angle ∠ B = β = 47.9660493671° = 47°57'38″ = 0.83770685254 rad
Angle ∠ C = γ = 47.9660493671° = 47°57'38″ = 0.83770685254 rad

Height: ha = 2.4955415797
Height: hb = 3.34220747281
Height: hc = 3.34220747281

Median: ma = 2.4955415797
Median: mb = 3.59882495744
Median: mc = 3.59882495744

Vertex coordinates: A[3.36; 0] B[0; 0] C[3.01333928571; 3.34220747281]
Centroid: CG[2.12444642857; 1.11440249094]
Coordinates of the circumscribed circle: U[1.68; 1.51547776192]
Coordinates of the inscribed circle: I[2.25; 1.00108352127]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 95.92109873421° = 95°55'16″ = 1.46774556027 rad
∠ B' = β' = 132.0439506329° = 132°2'22″ = 0.83770685254 rad
∠ C' = γ' = 132.0439506329° = 132°2'22″ = 0.83770685254 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    