Reflection2_Construct
Instructions for Construction
- Create point A (
but it has an A not a Z) - Create line BC. (
) - Reflect A across line BC (
, then click Point A and then click line BC). - Create a segment between A and A' ( then
then click on points A and A'). - Label the intersection of segment AA' and line BC ( then
then click on the segment and and the line). - Move Point A around. What do you notice about A, A', and line BC?
- Use the measures buttons to confirm your conjectures.
- To measure a segment, choose
then 
then click on both endpoints of the segment). - To measure an angle, click then three points.