What do you call a 11 sided pyramid????

Question

a pyramid that has 10 sides and a base & a pyramid which has 11 sides and a base??

Answer 1

there is no special name for it i think..it's like 11-gon or something like that

Answer 2

decagonal pyramid i suppose?

a 3 dimensional figure is described by the shape of its base, which in this case would be a decagon

Answer 3

I'm not sure about pyramids but an 11 sided shape is called a hendecagon and a 12 sided shape is called a dodecagon. So perhaps a pyramid with 10 sides and a base is called a hendecagonal pyramid and a pyramid with 11 sides and a base is maybe a dodecagonal pyramid. Just my theory, hope it helps.