| The applet below is an online variant of the common geoboard. To create a vertex, click next to a lattice node. It does not matter which node you choose. You'll be able to drag an existent vertex to any other node later on. Edges are added automatically. The new node is always inserted between the very first and last vertices. Intersecting edges are shown in red. To delete a node, check the "Delete nodes" and then click on undesirable nodes. Check back the "Draw nodes" box when finished. |
| Applet copyright Interactive Mathematics Miscellany and Puzzles |