im.g.1.5.2.Make It Right
Here is line, l, with point C on the line.
Use the compass and straightedge tools on this applet to
construct a line perpendicular to line l that passes through point C.
Attribution
illustrative mathematics. geometry. unit 1. section 5. activity 2. "Make it right."
https://im.kendallhunt.com/HS/teachers/2/1/5/index.html
Licensed under the Creative Commons Attribution 4.0 license
https://creativecommons.org/licenses/by/4.0/