Chapter 1: Tools of Geometry

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Presentation transcript:

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

Objectives To make isometric and orthographic drawings To draw nets of three-dimensional figures

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

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

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

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

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

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

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

Example 4 What figure will this net make?

Example 5 Draw a net for the graham cracker box.

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