Propositions

elements : 16

Proposition 4.1

Into a given circle to fit a straight line equal to a given straight line which is not greater than the diameter of the circle.

Proposition 4.3

About a given circle to circumscribe a triangle equiangular with a given triangle.

Proposition 4.10

To construct an isosceles triangle having each of the angles at the base double of the remaining one.

Proposition 4.14

About a given pentagon, which is equilateral and equiangular, to circumscribe a circle.

Proposition 4.16

In a given circle to inscribe a fifteen-angled figure which shall be both equilateral and equiangular.