Google Classroom
GeoGebraGeoGebra Classroom

Rotate and Reflect

Topic:
Symmetry
Use the polygon tool to make a polygon of your choice. Rotate: Plot a point near your polygon. Click on the rotate tool (in the 'red dot-line-blue dot' icon). Click on your polygon, then your point, then enter an angle of rotation. Choose a factor of 360. Repeat as many times as necessary to complete a full turn! Experiment with moving the points of your polygon, or the center of rotation. Reflect: Use the line tool to draw a line near your polygon, possibly even intersecting your polygon. Click on the reflect tool (that's the 'red dot-line-blue dot' tool). Click on your polygon, then the line. Experiment with moving your polygon and/or the line of reflection. Experiment by having more than one line of reflection. Design: Right click on your polygon, then use the menu at the top right to change colour/opacity.