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What is the intersection of a three dimensional figure and a plane called?
It is the cross-section of the figure by the plane.
Frustum of a rectangle?
Since a frustum is a portion of a solid, three-dimensional figure, and a rectangle is a plane, two-dimensional figure, there can be no such thing as the frustum of a rectangle.
What is a plane figure in geometry?
A two-dimensional figure, also called a plane or planar figure, is a set of line segments or sides and curve segments or arcs, all lying in a single plane. The sides and arcs are called the edges of the figure. The edges are one-dimensional, but they lie in the plane, which is two-dimensional. The triangle, the pentagon, the hexagon and the circle are just a few plane figures. Prisms and pyramids, for instance, are three-dimension figures.
Is an arrow a polygon if so why?
An arrow can be a polygon. A polygon is any two dimensional plane figure. An arrow can, obviously, be a three dimensional object.
What is a four sided three dimensional figure?
A pyramid is a four-sided, three-dimensional figure.
