im.g.1.6.4.Find the missing endpoint.
Line l is the perpendicular bisector of segment PS.
Unfortunately, S got lost.
Use straightedge and compass moves (the tools on the applet) to
construct a line perpendicular to line l that passes through point P.
Then find point S.
Use the Style Bar to change the name of the point to "S" and to show the label.
Attribution
illustrative mathematics. geometry. unit 1. section 6. activity 4.
"Find the missing endpoint."
https://im.kendallhunt.com/HS/teachers/2/1/6/index.html
Licensed under the Creative Commons Attribution 4.0 license
https://creativecommons.org/licenses/by/4.0/