a pyramid
Pyramid
a pyramid
Such a figure is a pyramid.
A polygonal pyramid.
a face.
It is called a face.
A pyramid is a solid figure with one face that is a polygon and three or more faces that are triangles with a common vertex. Yeah, pg. 114 in the math workbook is a little hard, and the guy who answered this before me thought it was funny to improve the answer by saying the answer was 45. That's just not mature. I don't get it. Anyway, I hope you finish your homework at this rate.
a polygonal prism or a polygond
cone
The answer is a cone
The sphere.