A circle could be, and I think that an ellipse also could be.
A circle is a two-dimensional figure, where the cylinder and cone are three-dimensional.
No. Polyhedra are three-dimensional objects, and the base of any prism, strictly speaking, should be two-dimensional. Any convex polygon (which is two-dimensional) can form the base of a pyramid. A circle, which is technically not a polygon, is the only convex two-dimensional figure that cannot form the base of a pyramid because it forms the base of a cone.
A cone with included interior is 3-dimensional. However, if you are not including the interior it is a 2-dimensional surface residing in a 3-d ambient space. If you're utilizing the common topological definition of dimension, you can derive that a cone (surface only) is 2 dimensional by looking at its open sets.
Yes it is. It only has two faces - the base, and the surface around the base rising to the point.
is a cone a two demensional figure
A normal cone has a circular face as its base, and a slanting surface which goes from the circumference of this face to the vertex. So it has two faces. Mathematicians also refer to the infinite equivalent as a cone. This could be considered as a 3-d shape with one face.
Find the length of the two sides of base. Add the two numbers. Then multiply by 2.
A square is a two-dimensional figure.
no it is a 4 dimensional figure not a 3 dimensional figure * * * * * No. A quadrilateral is a two dimensional figure. It has a length and a breadth and no more.
A two dimensional figure does not have volume or depth such as flat surfaced polygons.
A net is a two-dimensional pattern that you can fold to form a three-dimensional figure.
A cone needs a three dimensional space in which to exist but it's not a solid, it's a two dimensional surface.