https://prnt.sc/hmlxic
https://prnt.sc/hmlxyb
https://prnt.sc/hmlyls
First one
XY perp to AA'
P is midpoint of AA'
Thank you, but do you know the other two also? If not it's fine, thank you so much!
Third one
Subtraction Property of Equality
Multiplication Property of Equality
Symmetric Property of Equality
