It depends on your the inclinantion of the plane which is used to "slice" the cone.
The answer can be a circle, ellipse, parabola, hyperbola or two intersecting lines. These (apart from the last) are known as conic sections.
In terms of the 2-d figure that generates a cone, the answer is a straight line, with a non-zero slope, rotated about the x-axis.
Chat with our AI personalities
A 2D cone is often referred to as a "conic section." In mathematics, a conic section is a curve obtained by intersecting a cone with a plane. The different types of conic sections include circles, ellipses, parabolas, and hyperbolas, each with unique properties and equations.
It would look similar to an isosceles triangle.
here are some: 2d shapes- square circle triangle Rectangle 3d shapes- cone cuboid cube prism
Looking from the base your would see a circle. Looking from the side you would see a triangle.
A Circle if you mean 2d circle, 3d sphere =P Any continuously curves shape has no sides; ellipse (ellipsoid), cone, hyperbolic paraboloid...