# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 180   b = 180   c = 4.25

Area: T = 382.473334434
Perimeter: p = 364.25
Semiperimeter: s = 182.125

Angle ∠ A = α = 89.32435757789° = 89°19'25″ = 1.5598990497 rad
Angle ∠ B = β = 89.32435757789° = 89°19'25″ = 1.5598990497 rad
Angle ∠ C = γ = 1.35328484422° = 1°21'10″ = 0.02436116596 rad

Height: ha = 4.2549703826
Height: hb = 4.2549703826
Height: hc = 179.987745616

Median: ma = 90.05501596334
Median: mb = 90.05501596334
Median: mc = 179.987745616

Inradius: r = 2.11000595434
Circumradius: R = 90.0066272357

Vertex coordinates: A[4.25; 0] B[0; 0] C[2.125; 179.987745616]
Centroid: CG[2.125; 59.996581872]
Coordinates of the circumscribed circle: U[2.125; 89.98111838031]
Coordinates of the inscribed circle: I[2.125; 2.11000595434]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90.67664242211° = 90°40'35″ = 1.5598990497 rad
∠ B' = β' = 90.67664242211° = 90°40'35″ = 1.5598990497 rad
∠ C' = γ' = 178.6477151558° = 178°38'50″ = 0.02436116596 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.