Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Follow The Annenberg Learner on LinkedIn Follow The Annenberg Learner on Facebook Follow Annenberg Learner on Twitter
Learning Math Home
Session 9, Part B: Nets
Session 9 Part A Part B Part C Homework
geometry Site Map
Session 9 Materials:

Session 9, Part B:

In This Part: Nets with Regular Polygons | Nets with Circles

Problem B5


What would a net for a cylinder look like? Sketch one, and describe how the various edges are related.


Problem B6


A cone has a circular base and a point at the vertex. If you cut open a cone and unrolled it, what do you think you would have as the net? Predict what the net for a cone will look like, and then draw a picture of your prediction.


Problem B7


Take a party hat or some other cone-shaped object (a "right" cone where the vertex is directly above the center of the circle). Make a single slice up the side of the cone, and unroll it. What shape do you have? Explain why that is the correct net for a cone.


Problem B8


If you took a larger sector of the same circle, how would that change the cone? What if you took a smaller sector?

Next > Part C: Cross Sections

Learning Math Home | Geometry Home | Glossary | Map | ©

Session 9: Index | Notes | Solutions | Video

© Annenberg Foundation 2016. All rights reserved. Legal Policy