# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 11   b = 25   c = 26

Area: T = 136.382181697
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 24.81216315026° = 24°48'42″ = 0.43330446625 rad
Angle ∠ B = β = 72.55003904237° = 72°30'1″ = 1.26553705219 rad
Angle ∠ C = γ = 82.68879780737° = 82°41'17″ = 1.44331774692 rad

Height: ha = 24.79766939945
Height: hb = 10.91105453576
Height: hc = 10.49109089977

Median: ma = 24.90548188108
Median: mb = 15.56443824163
Median: mc = 14.28328568571

Inradius: r = 4.39994134506
Circumradius: R = 13.1076585905

Vertex coordinates: A[26; 0] B[0; 0] C[3.30876923077; 10.49109089977]
Centroid: CG[9.76992307692; 3.49769696659]
Coordinates of the circumscribed circle: U[13; 1.66881109334]
Coordinates of the inscribed circle: I[6; 4.39994134506]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 155.1888368497° = 155°11'18″ = 0.43330446625 rad
∠ B' = β' = 107.5499609576° = 107°29'59″ = 1.26553705219 rad
∠ C' = γ' = 97.31220219263° = 97°18'43″ = 1.44331774692 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.