Edges or sides? There are 3D figures with one side and one edge.
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Any convex three dimensional figure with straight edges (or plain faces) will have polygons for bases so there is an infinity of such shapes.
An equilateral triangle has sides and angles. There are 3 sides in any triangle. Edges are in three dimensional figures.
A sphere does not have edges, faces, or vertices. It is a three-dimensional object that is smooth and without any straight lines or sharp corners.
Any quadrilateral parallelopiped has, such as a cube or any other rectangularprism, or anything that you could make out of one of those by squashing it.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.