1.7.2 It's Cool to be Square

Goal: Construct a square with segment AB as one of its sides.
The construction has been started for you below: [br] - Segment AB has been extended into a line. [br] - Then we created circle A, which intersects line AB at point C and D. [br][br]Now, you take over. First, construct a perpendicular line that goes through A.[br][br]Then one that goes through B, then another line that connects the two.
Now, try it on your own. Use compass and straightedge moves to construct a square with segment AB as one of the sides.
Attribution
illustrative mathematics. geometry. unit 1. section 7. activity 2.[br]"It's cool to be square"[br][url=https://im.kendallhunt.com/HS/teachers/2/1/7/index.html]https://im.kendallhunt.com/HS/teachers/2/1/7/index.html[br][/url]Licensed under the Creative Commons Attribution 4.0 license[br][url=https://creativecommons.org/licenses/by/4.0/]https://creativecommons.org/licenses/by/4.0/[/url]
– Katie Nagle, Sabrina Cook, mark vasicek

Information: 1.7.2 It's Cool to be Square