Which step is the same when constructing an inscribed square and an inscribed regular hexagon? Construct a circle first.
Construct a line first.
Set the compass to the radius.
Set the compass to greater than half the diameter.

Set the compass to the radius.

Setting the compass width to the radius of the circle, rotating , where n is the number of sides of the regular figure and highlighting each vertix.

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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