I have cut a hole in my ceiling to fit an 8 inch diameter circular duct perpendicular to my floor so it goes straight up. The ceiling is pitched at 15 degrees. I want to draw the shape that this hole made in my ceiling so I can cut something to go around it. How can I do this?
2026-03-27 20:31:33.1774643493
How to project a circle onto an angled plane?
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