20.2 Incircle of the shoemaker’s knife 539Second constructionZY XABCQ
P20.2.3 Woo’s three constructionsZY XABC
QS
PZY X
AB
CMZY XABC 20.2 Incircle of the shoemaker’s knife 539Second constructionZY XABCQ
P20.2.3 Woo’s three constructionsZY XABC
QS
PZY X
AB
CMZY XABC