NOTES, for the 2nd.

Vocabulary:
Face
Edge
Vertex
Base
Polyhedron
prism
pyramid
lateral surface
cylinder
cone
sphere
hemisphere

Three Dimensional Figures:
Three Dimensional Figures, or solids, have length, width, and height. A flat surface of a solid is a face. An edge is where two faces meet, and a vertex is where three or more edges meet. The face that is used to classify a solid is a base.

The surfaces of a three dimensional figure determine the type of solid it is. A polyhedron is a three deminsional figure whose surfaces, or faces, are all polygons. Prisms and pyramids are two types of polyhedrons.

Prism:
A prism is a polyhedron that has two parallel congruent bases. The bases can be any polygon. The other faces are parallelogram.

Pyramids:
A pyramid is a polyhedron that has one base. The base can be any polygon. The other faces are triangles.