Constructing Angle Bisectors
- Bob Allen
To confirm that ray AD bisects angle BAC, measure angles BAD and DAC. (If the correct angle doesn't show up, reverse the order you're clicking the points.) Drag points A, B, and C to change angle BAC. How do the angle measures compare?
Drag point D and observe the distances from point D to the two sides of the angle. Write a conjecture about any point on the bisector of an angle. Hint: The if part should include point D and the angle bisector and the then part should include the measurements from D to the angle.
Did you actually read the instructions this time?