Chapter 1: Tools of Geometry

1. Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models

2. Isometric Drawing • “isos” = equal • “metron” = measure • All 3-D measurements are scaled equally • Use isometric dot paper to show three sides of a figure from a corner view

3. Example 1 • Make an isometric drawing of the cube structure on page 10 of your book.

4. Orthographic Drawing • Shows a top view, a front view, and a right-side view • Like a blueprint of a building

5. Example 2 • Make an orthographic drawing of the figure on page 11 of your book.

6. Foundation Drawing • Shows the base of a structure and the height of each part • Used for skyscrapers!

7. Example 3 • Make a foundation drawing for the isometric drawing on page 11 of your book.

8. Nets • Two-dimensional pattern that you can fold to form a three-dimensional figure • Shows all of the surfaces of a figure in one view

9. Example 4 • What figure will this net make?

10. Example 5 • Draw a net for the graham cracker box.

11. Homework • P. 13-15 • 1-16 all (with work) • 23-26 • 28-30