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Task #3: Angle Bisector

1. Toolbar ImageUse the Ray tool to draw rays AB and AC, creating angle CAB. (Tip: Give yourself room to maneuver by creating an obtuse angle. Place B relatively close to A, and C farther away.) 2. Toolbar ImageUse the Circle with Center through Point tool to create a circle with center A through point B. 3. Toolbar ImageUse the Intersect tool to mark the intersection of the circle with ray AC as point D.(Tip: Hover over the ray and circle until both are highlighted to make sure you mark the intersection of both.) 4. Toolbar ImageUse the Circle with Center through Point tool twice to construct (a) a circle with center B through point A and (b) a circle with center D through point A. 5. Toolbar ImageUse the Intersect tool to mark the intersection of the two circles from Step 4 (not A, the other point of intersection) as point E. 6. Toolbar ImageUse the ray tool to construct ray AE. This is the Angle Bisector! 7. Clean up the window by hiding the circles. This will automatically hide some of the points as well. 8. Toolbar ImageUse the Angle tool to check your answer by measuring. Be careful- the order in which you click points is very important! First, Click B, A, E (in that order) to measure angle BAE. Then, Click E, A, D (in that order) to measure angle EAD. 9. Toolbar ImageUse the Move tool to drag point C until both halves of the angle are as close to 50 degrees as you can get them.