Sjmarf@sh.itjust.works to People Twitter@sh.itjust.works · 14 hours agoThe value of xsh.itjust.worksimagemessage-square95fedilinkarrow-up1794arrow-down112
arrow-up1782arrow-down1imageThe value of xsh.itjust.worksSjmarf@sh.itjust.works to People Twitter@sh.itjust.works · 14 hours agomessage-square95fedilink
minus-squarebrisklinkfedilinkarrow-up9arrow-down1·8 hours agoThis is a standard way to draw geometric proofs, it’s not at all unreasonable to assume straight lines and unrepresentative angles.
minus-squareswitchboard_pete@fedia.iolinkfedilinkarrow-up3arrow-down1·7 hours agonormally in a geometric proof, a right angle is a right angle
minus-squarebrisklinkfedilinkarrow-up12·7 hours agoThis 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.
This is a standard way to draw geometric proofs, it’s not at all unreasonable to assume straight lines and unrepresentative angles.
normally in a geometric proof, a right angle is a right angle
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.
guess you’re right!