The answer depends on what you mean by correct [and incorrect].
1
4
4 triangular lateral faces
It has four triangles
Triangular is the correct spelling. T-r-i-a-n-g-u-l-a-r
6
The apex.
triangular prism triangular prism * * * * * The correct answer is an octagonal pyramid.
The correct spelling is pyramid (any of several triangular solids).
Five.
the new food pyrmaid
a prymaid has 4 sides