9 straws because it has 9 edges, 6 vertices and 5 faces
five A triangular based prism has 5 A triangular based pyramid has 4 and there is no such thing as a triangular based prism pyramid - unless you mean a truncated pyramid (or a frustum) which is essentially a prism.
18 straws.
a triangular prism, square based pyramid, rectangular prism and much more
15
You need nine sides, so nine straws. But you could just use one straw and cut it into nine pieces.
9
To build the skeleton of a triangle-based prism, you would need 9 straws: 3 for each edge of the triangle base (totaling 9 straws) and 6 additional straws to connect the vertices of the triangle to form the prism.
To create a triangular prism using straws, you would need a minimum of 6 straws. This is because a triangular prism has two triangular faces and three rectangular faces. Each triangular face would require 3 straws, and each rectangular face would require 2 straws. Therefore, the total number of straws needed would be 2 (for the triangular faces) + 3 (for the rectangular faces) = 6 straws.
five A triangular based prism has 5 A triangular based pyramid has 4 and there is no such thing as a triangular based prism pyramid - unless you mean a truncated pyramid (or a frustum) which is essentially a prism.
the answer is 12
18 straws.
Assuming that pirsim is meant to be prism, the answer is that a triangular based prism has triangular bases!
A triangular based prism has 6 vertices and 9 edges.
a triangular prism, square based pyramid, rectangular prism and much more
It could be called a pentahedral prism.
18 of them because an hexagonal prism has 18 edges
You can call it a "triangular prism" rather than "triangular based prism" ... saying a prism is "triangular" imply that the base is a triangle. There's no other name that I know of. A prism is just a 3d shape, so all you have to say is <type of shape> + prism to get the point across.