🧭 How to Use
Drag NeedleDrag the needle tip to move the compass.
Drag PencilDrag the pencil tip to resize the radius.
Drag HingeDrag the top hinge to draw a circle arc.
LockClick needle tip to lock/unlock compass position & radius.
Compass SizeUse the Compass Size slider (shown when compass is active) to resize.
RulerDrag body to move. Drag shaded ends to rotate.
ProtractorDrag body to move. Drag the end circles to rotate. Slider resizes.
All ToolsAll tools are active simultaneously — ruler, protractor, compass, pencil and line all work together.