11CHAPTER 11CHAPTER 11

322 NEL

Visualizing andConstructingPolyhedrons

Visualize and build polyhedrons from 2-D nets.

Emilio got a construction set for his birthday. He wants to know which pieces would fit together to make polyhedrons.

? What polyhedrons can be made with these polygons?

A. Create a net that can be folded into a polyhedron. Use congruent polygons only.

B. Fold to check. If the net works, sketch it and record whatpolyhedron it folds into.

C. Repeat Parts A and B with another set of congruent polygons.

D. Create a different net that can be folded into a polyhedron.Use any of the polygons.

E. Fold to check. If the net works, sketch it and tell whatpolyhedron it folds into.

F. Repeat Parts E and F as many more times as you can.

Goal

You will need• polygons

• scissors

• tape

1. a) What did you notice about the nets of all of thepyramids you made?

b) What did you notice about the nets of all of theprisms you made?

2. Why could you make more nets in Part D than Part A?

3. Which attributes of the polygons did you use to decidewhich polygons would fit together in nets?

ReflectingReflecting

polyhedronA 3-D shape withpolygons as faces.Prisms and pyramidsare two kinds ofpolyhedrons.

11-NelsonMathGr6-Chap11 7/20/05 5:40 PM Page 322