A hands-on kind of geometry
From a flat page to a solid idea.
Choose a shape, set its size, then print, cut, and fold.
Your printable netA4 · PORTRAIT
Solid lines: cut · dashed lines: foldDimensions in millimeters
Build something tangible.
Print on A4 at 100% scale. Turn off browser headers and footers. The 20 mm reference line lets you check the printed size.
Cut, fold, connect.
- Cut along the solid outline, including any glue tabs.
- Fold inward along each dashed line.
- Apply glue to the tabs and bring neighboring faces together.
For the pyramid, “slant height” is the altitude of a triangular face. It must be greater than half the base width to create a non-flat pyramid.