[b] The points are ready for you...you just need to move them to the correct location![br][br][math]\alpha[/math] [/b]"alpha" represents the angle from B to A to B' (angle BAB')[br][math]\beta[/math] "beta" represents the angle from C to A to C' (angle CAC')[br][math]\gamma[/math] "gamma" represents the angle from D to A to D' (angle DAD')[br][br][u]Steps[br][/u]1) The first angle ([math]\alpha[/math] alpha) is already turned on for you. Notice the green circle on the left. Move point B' until it reads 120 degrees.[br][br]2) Turn off [math]\alpha[/math] alpha by clicking the green circle. Turn on [math]\beta[/math] beta by clicking the empty circle below alpha (it should turn blue)[br][br]3) Move point C' until it reads 120 degrees.[br][br]4) Repeat steps 2 and 3 by turning off [math]\beta[/math], turning on [math]\gamma[/math] (it should turn red) and moving point D' until it reads 120 degrees.[br][br]5) Select the polygon tool [icon]/images/ggb/toolbar/mode_polygon.png[/icon] and click B' to C' to D' and back to B' to form a triangle!

[b]Let's check your work![br][br][/b]1) Select the rotate tool [icon]/images/ggb/toolbar/mode_rotatebyangle.png[/icon][br]2) Click in the center of triangle BCD (try to avoid points, line segments and circles)[br][br]3) Click on the center of rotation A[br][br]4) Type in 120 and select clockwise!