- Deborah Ball
ABC that has been rotated to form A'B'C'. But where is the center and what is the angle of rotation? 1. Construct the segments between the pre-image and the image. (Click Show Segments) 2. Construct the perpendicular bisectors of each segment.
- Find the midpoints of each segment (click Show midpoints)
- Construct a perpendicular line through each midpoint (click Show perpendicular lines)
- Click each checkbox individually to see the angle and its measurement. What do you notice about all the angle measurements?