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GeoGebraGeoGebra Classroom

Discover Vertical Angles

STUDENTS

Please do the following: 1) Use the LINE tool Toolbar Image to construct 2 lines that intersect. 2) Use the INTERSECT tool Toolbar Image to plot the point at which these 2 lines intersect. 3) Use the ANGLE tool Toolbar Image to measure any 2 angles that are not adjacent each other. After doing so, answer the reflective prompt located below the applet.

AFTER COMPLETING THE CONSTRUCTION ABOVE...

Select the MOVE tool Toolbar Image. Move any 1 (or more) of the 4 blue points around. What do you notice? Describe as best you can in your own words!