The classic cube doubling, angle trisection and squaring the circle problems.

Trying to solve the classical problems of Antiquity, such as the trisection problem, Greeks discovered different mathematical curves. There was no systematic theory of higher-degree curves in Greek mathematics but Greeks studied many interesting special cases:

• The Cissoid of Diocles ( c. 100 BC )

Diocles showed that the Cissoid a cubic curve defined by y² (1+x) = (1-x)³ could be used to duplicate the cube

• The Spiric Sections of Perseus ( c. 150 BC )

• The Epicycles of Ptolemy ( c. 140 AD ) used to describe the retrograde motion of Planets in his Earth centric model.

• Ellipse, Parabola, Hyperbola (Conic Sections) discovered probably by Menaechmus and theory studied in details by Apollonius.

Xah Lee has a very interesting Website that includes also information of Curves among which some have been discovered by ancient Greek mathematicians. I provide the links to the corresponding plane curves. Later I will provide additional information. Also other links are provided.

CURVE	LINKS
Archimedean Spiral