EntityQ877775· pop 26· linked from 459 articlesprojective spaceSign in to savespace of 1-dimensional linear subspaces (lines passing through the origin) in a vector spaceConnectionsalgebraic varietyEntityatlasEntityvector spaceEntitythree-dimensional spaceEntityparallelismEntityperspectiveEntitymanifoldEntityprojective geometryEntityDesargues' theoremEntityequivalence classEntityprojective planeEntityhomogeneous polynomialEntityhomogeneous coordinatesEntitypoint at infinityEntityprojectionEntityhomographyEntityGrassmannianEntityantipodal pointEntitymathematicsEntitygeometryEntityCategoriesProjective geometrySpace (mathematics)