Three-dimensional figures, or _______, can be made up of flat or curved surfaces.Each flat surface is called a ________.An _______ is the segment that is the intersection of two faces. A ________ vertex is the point that is the intersection of three or more faces.

Label each part of the rectangular prism:

FaceEdgeVertex

name___________

vertices____________

edges___________

bases_________

name___________

vertices____________

edges___________

bases_________

Cool Fact

The sum of the number of faces and vertices of a polyhedra is_____ more than the number of edges.

Euler's Formula

Fill in the chart:

Faces Edges Vertices

15                   9

   20            30      

   8                                     12

Ex 2: Name each solid, first on is done for you.

3C. D.

E. F. G.

A ____________ is the intersectionof a 3-D figure and a plane.4

C. D.

Use these helpful hints to help you draw each:

Ex 1:  A hexagonal based prism

Ex 2:  A hexagonal based pyramid

Ex 3:   A cylinder

Ex 4:   A cone

Ex 5:  A sphere