It can be formed by the intersection of a cone and a plane parallel to the base of the cone.
The Reuleaux triangle is formed from the intersection of three of these objects. It is given by the parametric functions x equals a cosine t and y equals a sine t, and in polar coordinates it is given by the equation r equals a. It can be formed by the intersection of a cone and a plane parallel to the base of the cone. For 10 points, give this two-dimensional geometric object with area proportional to the square of its radius.
The Reuleaux triangle is formed from the intersection of three of these objects.
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