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A three dimensional triangle is also known as a pyramid. In a triagonal pyramid, there are six edges and four corners.
On a three-dimensional pyramid there are 5 faces, 8 edges, and 5 verataces. I hope this helped! :)
6 edges
I don't think there's a three dimensional rectangle, and if the two dimensional triangle exists in three dimensional space, it would have strange properties because it only has 4 edges. There however, a three dimensional rectangular prism. It has 12 edges.
A triangular-based pyramid has six edges: three in the base triangle and three from there to the apex.
eight * * * * * A triangular pyramid has six edges: three edges that form the triangular base and then three more edges going up from each vertex of the base to the apex (peak) of the pyramid.
A pyramid is a generic term, used to describe a three dimensional shape with a polygonal base and triangular sides that meet at an apex above the base. The base can be a polygon with any number of sides and the number of faces, edges and vertices of a pyramid depend on this number of sides. If the base is an n-sided polygon, then the pyramid has 2n edges.
8 Four edges on the square base and then four more leading up from each corner to the apex.
A square pyramid has 5 * * * * * The above answer has nothing to do with the question. A triangular pyramid has 6 edges. Three edges form the triangular base. Another 3 edges rise from the three vertices of the triangular base to the apex of the pyramid. 3 + 3 = 6. OK?
A triangular-based pyramid has six edges: three in the base triangle and three from there to the apex.
a pyramid has 8 edges
A pyramid with an n-sided base will have n + 1 vertices, n + 1 faces, and 2n edges.