# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 0.75   b = 0.75   c = 1.06

Area: T = 0.28112497822
Perimeter: p = 2.56
Semiperimeter: s = 1.28

Angle ∠ A = α = 45.03656507165° = 45°2'8″ = 0.78660203858 rad
Angle ∠ B = β = 45.03656507165° = 45°2'8″ = 0.78660203858 rad
Angle ∠ C = γ = 89.92986985671° = 89°55'43″ = 1.5769551882 rad

Height: ha = 0.75499994193
Height: hb = 0.75499994193
Height: hc = 0.53106599665

Median: ma = 0.83881079883
Median: mb = 0.83881079883
Median: mc = 0.53106599665

Inradius: r = 0.22197263924
Circumradius: R = 0.53300004104

Vertex coordinates: A[1.06; 0] B[0; 0] C[0.53; 0.53106599665]
Centroid: CG[0.53; 0.17768866555]
Coordinates of the circumscribed circle: U[0.53; 0.00106595561]
Coordinates of the inscribed circle: I[0.53; 0.22197263924]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 134.9644349284° = 134°57'52″ = 0.78660203858 rad
∠ B' = β' = 134.9644349284° = 134°57'52″ = 0.78660203858 rad
∠ C' = γ' = 90.07113014329° = 90°4'17″ = 1.5769551882 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    