define and prove properties of orthocenters with vector algebra#294
Open
tonyxty wants to merge 1 commit intojjdishere:masterfrom
Open
define and prove properties of orthocenters with vector algebra#294tonyxty wants to merge 1 commit intojjdishere:masterfrom
tonyxty wants to merge 1 commit intojjdishere:masterfrom
