# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 196   b = 264   c = 328.8

Area: T = 258721.9999921
Perimeter: p = 788.8
Semiperimeter: s = 394.4

Angle ∠ A = α = 36.59215918941° = 36°35'30″ = 0.63986437571 rad
Angle ∠ B = β = 53.41098254412° = 53°24'35″ = 0.93221773069 rad
Angle ∠ C = γ = 89.99985826647° = 89°59'55″ = 1.57107715896 rad

Height: ha = 2643.999999919
Height: hb = 1965.99999994
Height: hc = 157.3722262726

Median: ma = 281.6600284091
Median: mb = 236.3022179423
Median: mc = 164.4043892898

Inradius: r = 65.59883772619
Circumradius: R = 164.440000005

Vertex coordinates: A[328.8; 0] B[0; 0] C[116.8333090024; 157.3722262726]
Centroid: CG[148.5444363341; 52.45774209085]
Coordinates of the circumscribed circle: U[164.4; 0.00440667904]
Coordinates of the inscribed circle: I[130.4; 65.59883772619]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 143.4088408106° = 143°24'30″ = 0.63986437571 rad
∠ B' = β' = 126.5990174559° = 126°35'25″ = 0.93221773069 rad
∠ C' = γ' = 90.00114173353° = 90°5″ = 1.57107715896 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   