# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 8   b = 24   c = 24

Area: T = 94.65772765296
Perimeter: p = 56
Semiperimeter: s = 28

Angle ∠ A = α = 19.18881364537° = 19°11'17″ = 0.33548961584 rad
Angle ∠ B = β = 80.40659317731° = 80°24'21″ = 1.40333482476 rad
Angle ∠ C = γ = 80.40659317731° = 80°24'21″ = 1.40333482476 rad

Height: ha = 23.66443191324
Height: hb = 7.88881063775
Height: hc = 7.88881063775

Median: ma = 23.66443191324
Median: mb = 13.26664991614
Median: mc = 13.26664991614

Inradius: r = 3.38106170189
Circumradius: R = 12.17702212681

Vertex coordinates: A[24; 0] B[0; 0] C[1.33333333333; 7.88881063775]
Centroid: CG[8.44444444444; 2.62993687925]
Coordinates of the circumscribed circle: U[12; 2.02883702113]
Coordinates of the inscribed circle: I[4; 3.38106170189]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 160.8121863546° = 160°48'43″ = 0.33548961584 rad
∠ B' = β' = 99.59440682269° = 99°35'39″ = 1.40333482476 rad
∠ C' = γ' = 99.59440682269° = 99°35'39″ = 1.40333482476 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    