A 3 dimensional pentagon has 15 edges
8 Four edges on the square base and then four more leading up from each corner to the apex.
-5
There is no 3 dimensional figure with JUST 3 edges.
5
A 3 dimensional pentagon has 15 edges
8 Four edges on the square base and then four more leading up from each corner to the apex.
-5
There is no 3 dimensional figure with JUST 3 edges.
5
3 corners (vertices) and 3 edges (sides).
Square-based pyramid (like the ones in Egypt).
A three dimensional triangle is also known as a pyramid. In a triagonal pyramid, there are six edges and four corners.
A rhombus is a two dimensional figure while the concept of {faces, vertices and edges} is relevant to 3-dimensional shapes.
A cube
An equilateral triangle has sides and angles. There are 3 sides in any triangle. Edges are in three dimensional figures.
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