# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 21   b = 24   c = 29

Area: T = 248.1298998708
Perimeter: p = 74
Semiperimeter: s = 37

Angle ∠ A = α = 45.48107045498° = 45°28'51″ = 0.79437880405 rad
Angle ∠ B = β = 54.57548616063° = 54°34'29″ = 0.95325110239 rad
Angle ∠ C = γ = 79.94444338439° = 79°56'40″ = 1.39552935892 rad

Height: ha = 23.63113332103
Height: hb = 20.6777416559
Height: hc = 17.11223447385

Median: ma = 24.45991496173
Median: mb = 22.29334968096
Median: mc = 17.27699160392

Inradius: r = 6.70661891543
Circumradius: R = 14.72662110395

Vertex coordinates: A[29; 0] B[0; 0] C[12.17224137931; 17.11223447385]
Centroid: CG[13.7244137931; 5.70441149128]
Coordinates of the circumscribed circle: U[14.5; 2.57112431974]
Coordinates of the inscribed circle: I[13; 6.70661891543]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 134.519929545° = 134°31'9″ = 0.79437880405 rad
∠ B' = β' = 125.4255138394° = 125°25'31″ = 0.95325110239 rad
∠ C' = γ' = 100.0565566156° = 100°3'20″ = 1.39552935892 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.