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The contents cover core drafting operations such as constructing and bisecting shapes, copying and creating parallel and perpendicular lines, and dividing circles and lines. It then progresses to practical pattern development for tees and elbows, followed by radial pattern development for cones, pyramids, frustums, and related forms, ending with triangulation, glossary, and versioning history. 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C.  \nPattern Development: Sheet Metal Level 1 by Brian Coey is licensed under a Creative Commons Attribution 4.0 International  \nLicense ([https://creativecommons.org/licenses/by/4.0/](https://creativecommons.org/licenses/by/4.0/)), except where otherwise noted.  \n© 2021 Brian Coey  \nThe CC licence permits you to retain, reuse, copy, redistribute, and revise this book—in whole or in part—for free providing the author is attributed as follows:  \nPattern Development: Sheet Metal Level 1 ([https://opentextbc.ca/patterndevelopment/](https://opentextbc.ca/patterndevelopment/)) by Brian Coey  \nis licensed under a CC BY 4.0 Licence ([http://creativecommons.org/licenses/by/4.0/](http://creativecommons.org/licenses/by/4.0/)).  \nIf you redistribute all or part of this book, it is recommended the following statement be added to the copyright page so readers can access the original book at no cost:  \nDownload for free from the B.C. Open Textbook Collection ([https://open.bccampus.ca/find-open](https://open.bccampus.ca/find-open)textbooks/) .  \nSample APA-style citation (7th Edition):  \nCoey, B. (2021). Pattern Development: Sheet Metal Level 1. BCcampus. [https://opentextbc.ca/](https://opentextbc.ca/)[ ](https://opentextbc.ca/)[patterndevelopment/](patterndevelopment/)  \nImage attributions:  \nAll GIFs and images in this book are © Camosun College and licensed under a CC BY 4.0 Licence ([http://creativecommons.org/licenses/by/4.0/](http://creativecommons.org/licenses/by/4.0/)), unless otherwise noted.  \nCover image attribution:  \n“Right Cone – Step 8 ([https://pressbooks.bccampus.ca/geoconst/chapter/right-cone/](https://pressbooks.bccampus.ca/geoconst/chapter/right-cone/))” by Camosun College is licensed under a CC BY 4.0 Licence ([https://creativecommons.org/licenses/by/4.0/](https://creativecommons.org/licenses/by/4.0/)).  \nEbook ISBN: 978-1-77420-124-4  \nPrint ISBN: 978-1-77420-123-7  \nVisit BCcampus Open Education ([http://open.bccampus.ca/](http://open.bccampus.ca/)) to learn about open education in British Columbia.  \nThis book was produced with Pressbooks ([https://pressbooks.com](https://pressbooks.com)) and rendered with Prince.  \nContents  \nAccessibility Statement ix  \nFor Students: How to Access and Use this Textbook xiii  \nAbout BCcampus Open Education xv  \nIntroduction 1  \nPart I. Geometric Construction  \n1. Construct Triangles- \"Triangulation\" 7  \n2. Bisect a Line 9  \n3. Bisect an Arc 11  \n4. Bisect an Angle 13  \n5. Copy an Angle 17  \n6. Create a Parallel Line 19  \n7. Create a Perpendicular Line 21  \n8. Draw an Arc Through Three Points 25  \n9. Divide a Circle Into 12 Equal Parts 29  \n10. Divide a Line Using a Ruler on an Angle 31  \n11. Create a Hexagon 33  \n12. Create Other Polygons 35  \n13. Video: Geometric Construction 37  \nPart II. Parallel Line Pattern Development  \n14. Pipe on a Miter 41  \n15. Equal Diameter 90 Degree Tee 45  \n16. Unequal Diameter 90 Degree Tee-Shop Method 49  \n17. Off Centre 90 Degree Tee 53  \n18. Oblique Tee 57  \n19. Round Elbow 61  \nPart III. Radial Line Pattern Development  \n20. Right Cone 69  \n21. Pyramid 75  \n22. Frustum of a Cone 79  \n23. Cone on a Pitch/Miter 83  \nPart IV. Triangulation  \n24. On-Centre Square to Round 91  \n25. On-Centre Round to Taper 99  \n26. Off-Centre Square to Round 107  \n27. Off-Centre Round Taper 115  \n28. Way-Off-Centre Square to Round or Any Shape 123  \nGlossary 133  \nVersioning History 137  \nAccessibility Statement  \nBCcampus Open Education believes that education must be available to everyone. This means supporting the creation of free, open, and accessible educational resources. We are actively committed to increasing the accessibility and usability of the textbooks we produce.  \nx Brian Coey  \nAccessibility of This Textbook  \nAccessibility Checklist  \n\n| Element | Requirements | Pass? |\n| --- | --- | --- |\n| Headings | Content is organize","cbCaiiAylCGXUa46","https://ap.wps.com/l/cbCaiiAylCGXUa46","pdf",6434368,153,"English","# Contents\n## Part I. Geometric Construction\n## Part II. Parallel Line Pattern Development\n## Part III. Radial Line Pattern Development\n## Part IV. Triangulation\n## Glossary\n## Versioning History\n## Accessibility Statement","[{\"question\":\"What learning topics are covered in Part I of the book?\",\"answer\":\"Part I focuses on geometric construction fundamentals, including triangulation, bisecting lines, arcs, and angles, copying angles, and constructing parallel and perpendicular lines.\"},{\"question\":\"Which pattern development skills are covered for parallel line patterns?\",\"answer\":\"Part II covers parallel line pattern development for sheet metal joints and components such as miters, tees (equal/unequal diameter and off-center), oblique tees, and round elbows.\"},{\"question\":\"What forms are taught in the radial line pattern development section?\",\"answer\":\"Part III teaches radial line pattern development using right cones, pyramids, frustums of a cone, and cone-on-a-pitch/miter patterns, before moving to triangulation topics.\"}]","Pattern Development - Sheet Metal Level 1 | PDF",386]