# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 5.2   b = 5.2   c = 1.56

Area: T = 4.01101104025
Perimeter: p = 11.96
Semiperimeter: s = 5.98

Angle ∠ A = α = 81.37330734413° = 81°22'23″ = 1.4220228054 rad
Angle ∠ B = β = 81.37330734413° = 81°22'23″ = 1.4220228054 rad
Angle ∠ C = γ = 17.25438531174° = 17°15'14″ = 0.30111365456 rad

Height: ha = 1.54223501548
Height: hb = 1.54223501548
Height: hc = 5.14111671827

Median: ma = 2.82443229277
Median: mb = 2.82443229277
Median: mc = 5.14111671827

Inradius: r = 0.67105870238
Circumradius: R = 2.63297530346

Vertex coordinates: A[1.56; 0] B[0; 0] C[0.78; 5.14111671827]
Centroid: CG[0.78; 1.71437223942]
Coordinates of the circumscribed circle: U[0.78; 2.5111414148]
Coordinates of the inscribed circle: I[0.78; 0.67105870238]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 98.62769265587° = 98°37'37″ = 1.4220228054 rad
∠ B' = β' = 98.62769265587° = 98°37'37″ = 1.4220228054 rad
∠ C' = γ' = 162.7466146883° = 162°44'46″ = 0.30111365456 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.