[b][i][size=150]We first start with a square [/size][/i][/b](□_□)

[b][i][size=150]Then we bisect the Square and connect it to corner. [/size][/i][/b]ヽ(・∀・)ﾉ

[b][i]Do some magic [/i][/b]╰( ͡° ͜ʖ ͡° )つ──☆*:・ﾟ [br][br]Just perpendicular lines with midpoint bisector. :)

[br]This is here in case we couldn't construct (╮°-°)╮┳━━┳ ( ╯°□°)╯ ┻━━┻[br] (╯°益°)╯彡┻━┻