A shape made of perfectly straight lines would probably be classified as ________ shape.

A geometric shape is any structure, whether open or closed, having a certain shape and properties made up of lines, curves, and points. Several well-known geometric shapes include the square, rectangle, circle, cone, cylinder, sphere, and so on. Each of these shapes differs from other shapes in a few specific ways.

In geometry, if an item or shape is not connected at both ends, it is said to be open. A closed geometric shape is one that has both ends of an object or form joined.

There are two categories of geometric shapes:

Two-dimensional: These are 2D shapes that have only the x-axis and y-axis. They are two-dimensional, flat constructions. For example, triangle, square, rectangle, etc.
Three-dimensional: These are three-dimensional (3D) shapes that have x, y, and z axes. The height of the object is represented by the z-axis. They are three-dimensional, solid formations. such is cube, cuboid, etc.

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