this post was submitted on 08 Oct 2024
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The value of x (sh.itjust.works)
submitted 1 month ago by [email protected] to c/[email protected]
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[–] [email protected] 1 points 1 month ago (1 children)

normally in a geometric proof, a right angle is a right angle

[–] [email protected] 17 points 1 month ago (1 children)

This was certainly not my experience in high school. An unlabelled angle could never be assumed. Only angles marked with a square could be taken as right angles.

[–] [email protected] 2 points 1 month ago

guess you're right!