# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 18   b = 24   c = 24

Area: T = 200.2377359152
Perimeter: p = 66
Semiperimeter: s = 33

Angle ∠ A = α = 44.04986256741° = 44°2'55″ = 0.7698793549 rad
Angle ∠ B = β = 67.9765687163° = 67°58'32″ = 1.18663995523 rad
Angle ∠ C = γ = 67.9765687163° = 67°58'32″ = 1.18663995523 rad

Height: ha = 22.24985954613
Height: hb = 16.6866446596
Height: hc = 16.6866446596

Median: ma = 22.24985954613
Median: mb = 17.49328556845
Median: mc = 17.49328556845

Inradius: r = 6.06877987622
Circumradius: R = 12.94546373593

Vertex coordinates: A[24; 0] B[0; 0] C[6.75; 16.6866446596]
Centroid: CG[10.25; 5.56221488653]
Coordinates of the circumscribed circle: U[12; 4.85442390097]
Coordinates of the inscribed circle: I[9; 6.06877987622]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135.9511374326° = 135°57'5″ = 0.7698793549 rad
∠ B' = β' = 112.0244312837° = 112°1'28″ = 1.18663995523 rad
∠ C' = γ' = 112.0244312837° = 112°1'28″ = 1.18663995523 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 ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.