# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 2.83   b = 3.16   c = 3.16

Area: T = 3.99880636575
Perimeter: p = 9.15
Semiperimeter: s = 4.575

Angle ∠ A = α = 53.20332964987° = 53°12'12″ = 0.92985726968 rad
Angle ∠ B = β = 63.39883517506° = 63°23'54″ = 1.10765099784 rad
Angle ∠ C = γ = 63.39883517506° = 63°23'54″ = 1.10765099784 rad

Height: ha = 2.82554866837
Height: hb = 2.53304200364
Height: hc = 2.53304200364

Median: ma = 2.82554866837
Median: mb = 2.55496764501
Median: mc = 2.55496764501

Inradius: r = 0.87438936956
Circumradius: R = 1.76770584076

Vertex coordinates: A[3.16; 0] B[0; 0] C[1.26772310127; 2.53304200364]
Centroid: CG[1.47657436709; 0.84334733455]
Coordinates of the circumscribed circle: U[1.58; 0.79112619135]
Coordinates of the inscribed circle: I[1.415; 0.87438936956]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 126.7976703501° = 126°47'48″ = 0.92985726968 rad
∠ B' = β' = 116.6021648249° = 116°36'6″ = 1.10765099784 rad
∠ C' = γ' = 116.6021648249° = 116°36'6″ = 1.10765099784 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.