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Fact: a polygonal pyramid has a polygon for a base. Fact: A polygon with n sides (straws) has n vertices (balls of clay). Fact: A pyramid has one vertex (clay) at the top. Fact: Each vertex of the base has a side (straw) that connects it to the top vertex (clay). Question: How many sides does a hexagon have? (base straws) Question: How many vertices does a hexagon have? (base clay) Question: How many vertices are there all together, including the top one? (clay) Question: How many sides connect the base to the top vertex? (side straws) Question: How many sides (straws) are there all together? (straws)
No they have to have a polygon as a base.
not all prisms
Just the one and it will be the base of the pyramid.
The answer will depend on what the shape is. And since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
Fact: a polygonal pyramid has a polygon for a base. Fact: A polygon with n sides (straws) has n vertices (balls of clay). Fact: A pyramid has one vertex (clay) at the top. Fact: Each vertex of the base has a side (straw) that connects it to the top vertex (clay). Question: How many sides does a hexagon have? (base straws) Question: How many vertices does a hexagon have? (base clay) Question: How many vertices are there all together, including the top one? (clay) Question: How many sides connect the base to the top vertex? (side straws) Question: How many sides (straws) are there all together? (straws)
no
Cones and pyramids have only one base, but prisms have multiple bases.
6
No they have to have a polygon as a base.
6
a pentagon
16 straws.
A base
That's going to depend on what shape you're building, which, as far as I can see, you neglected to mention.
not all prisms
Just the one and it will be the base of the pyramid.