Tegak lurus mautsaha antuk vertikalitas miwah katiadakan antuk garis maliku-liku gaya Curvilinear sane ngadukung tiang lurus sane nenten kapegat saking baduur ka beten, kalintasin olih transom miwah palang horizontal.
Perpendicular strove for verticality and dispensed with the Curvilinear style's sinuous lines in favour of unbroken straight mullions from top to bottom, transected by horizontal transoms and bars.