triangle.
Nonagon
fountain
quadrangle or quadrilateral
Some words that start and end with P are:parsnippeeppimpplopplumppolyppoopprimpproppulp
Oh, dude, shapes that start with the letter "p"? Let's see, we've got pentagon, parallelogram, pyramid, and polygon. Like, there are probably more, but those are the ones that come to mind. So, yeah, shapes with a "p" for the win!
pentagon!!
It depends on the 7 shapes that you start with.
7 Sides on a Twenty Pence Piece
clearly not squares :P
Polygon
polygons perhaps
triangle.
Plastics
polygon pentagon parallellagram pyramid
Maybe only a circle and a oval. :P
rhombus