1
A pentagonal prism will have 15 edges.
3 vertices, 3 edges and 1 face.
A 3D shape that has 6 edges is called a hexagonal prism.
An isosahedrons has 12 edges many. A cube is one example.
8
I believe it would have nine edges.
A Triangle.
Six
A triangle has three sides or edges.
triangle
there are no curved edges on any triangle.
Three EdgesA triangle has three edges.
A triangle has three edges; a rectangle has four.
A triangle consists of three corners and three edges.
6 edges.
There are three straight edges in a triangle.