MathCastle

Geometry Lab

Draw geometry figures by pointing and clicking — no code. Shapes are built on points, so dragging a point reshapes everything attached to it. Everything also works from the keyboard.

Graphing calculator

Pick a tool above, then click on the grid to draw. Points snap to the grid; every shape is built on points, so dragging a point reshapes everything attached to it.

Click a point or shape to select it. Drag points to move them; drag empty space to move the view.

New shapes

The style new segments, polygons and circles get. Select a shape to change it.

Colour

In this figure

Nothing yet.

Figure

New diagram (not saved yet)
Draw something to export it.