The equation 2p2 = ar represents this shape in pedal coordinates.
This shape's evolute is referred to as the  semicubical  version of it. Asection of this shape is a Lissajous curve with ω = 2 and δ = π . The equation 2p2 = ar represents this shape in pedal coordinates. When this shape is in-verted with the inversion center at its vertex, the result is the cissoid of Diocles.Menaechmus successfully duplicated the   cube using two of these shapes. Anequation for this curve in polar coordinates is r = − 2a , and a mirror with 1+cos θthis shape focuses parallel rays of light to one point. For ten points, identify this shape de ned as the set of all points equidistant from the focus and the directrix, one of which is described by the graph of the equation y = x2.
This shape's evolute is referred to as the  semicubical  version of it.
parabola