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Lampshade Designer

This applet helps you make a pattern for a round lampshade with slanted sides. To print the whole pattern at once (on bigger paper), see https://ggbm.at/WAyTfPCR.

Set the bottom radius, top radius, and height. Make sure you see one full wedge in the view. Print Preview from the hamburger menu, choose Graphics 2, and set 1 unit = 2.54 cm. Print three copies and put them together for your lampshade pattern.
The pattern makes a lampshade like this one.
The pattern makes a lampshade like this one.