1. Nets of Solids or Convex Polyhedrons
Section 6.2

2. Learning Goal
We will use our knowledge of the characteristics of solids so that we can match a convex polyhedron to its net. We’ll know we’ve got it when we’re able to create a net for a given solid.

3. Vocabulary Convex Polyhedron Net Nonconvex (or Concave) Polyhedron
(Line) Segment

4. Quick Reminder
A polyhedron is a solid formed by polygons. They have edges, vertices and faces. There are two types of polyhedrons: prisms and pyramids.

5. Convex Polyhedrons
Contains all line segments connecting any two vertices (corners) within it
Every face of a convex polyhedron can be laid out on a flat surface

6. Nonconvex (Concave) Polyhedrons
Has at least one line segment connecting two vertices (corners) outside it

7. Nets
The net of a polyhedron is the 2-dimensional plane figure we get when the surfaces of the solid are laid out flat (unfolded).

8. Possible Nets of a Triangular Prism

9. Possible Nets of a Square Pyramid

10. Let’s Practice
Grade 5
Grade 6
Page 90 #1 #2
Page 91 #3
Page 93 #1
Page 94 #2
Page 95 #3
Once finished, complete the worksheet(s) provided. Then, you can work on your narrative or read quietly.