chapter 1: tools of geometry 1-2 drawings, nets, & other models
TRANSCRIPT
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Chapter 1: Tools of Geometry
1-2
Drawings, Nets, & Other Models
![Page 2: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/2.jpg)
Objectives
• To make isometric and orthographic drawings
• To draw nets of three-dimensional figures
![Page 3: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/3.jpg)
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
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Example 1
• Make an isometric drawing of the cube structure on page 10 of your book.
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Orthographic Drawing
• Shows a top view, a front view, and a right-side view
• Like a blueprint of a building
![Page 6: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/6.jpg)
Example 2
• Make an orthographic drawing of the figure on page 11 of your book.
![Page 7: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/7.jpg)
Foundation Drawing
• Shows the base of a structure and the height of each part
• Used for skyscrapers!
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Example 3
• Make a foundation drawing for the isometric drawing on page 11 of your book.
![Page 9: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/9.jpg)
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
![Page 10: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/10.jpg)
Example 4
• What figure will this net make?
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Example 5
• Draw a net for the graham cracker box.
![Page 12: Chapter 1: Tools of Geometry 1-2 Drawings, Nets, & Other Models](https://reader036.vdocuments.us/reader036/viewer/2022082323/56649edb5503460f94beaa49/html5/thumbnails/12.jpg)
Homework
• P. 13-15
• 1-16 all (with work)
• 23-26
• 28-30