There are four triangles in the pyramid.
The base triangle that supports the other three counts as THREE straws, one per each of the three sides.
But the remaining three triangles also use the base triangle for one of their three sides. That means there are only two additional straws for each of the three remaining triangles. So there are SIX straws total in the three triangles supported by the base one.
That's a sum total of NINE (9) unique straws in the pyramid...3 in the base and 2 each in the three supported triangles. ANS.
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.
six, you need six
9.
2 faces
6,6
To make a triangular-based pyramid, you need a total of 6 straws. You will use 3 straws to form the triangular base and 3 additional straws to connect each vertex of the triangle to the apex of the pyramid. This structure creates a stable and well-defined triangular pyramid shape.
8 straws.
18 straws.
10
15
24
To make a triangular-based pyramid, you would need a total of 6 straws. This includes 3 straws for the triangular base and 3 additional straws connecting each vertex of the base to the apex of the pyramid. The straws form the edges of the pyramid, creating its structure.