Ruler
http://www.geogebratube.org/material/show/id/48532 (Download GeoGebra file)
A rotatable ruler with adjustable length.
Drag the ruler to move. Drag the red point to rotate.
Use the slider to adjust the length.
http://www.geogebratube.org/material/show/id/48532 (Download GeoGebra file)
A rotatable ruler with adjustable length.
Drag the ruler to move. Drag the red point to rotate.
Use the slider to adjust the length.