7 . Let us assume instead that X is limiting parallel to I, with P + X + Y . Prove that P is limiting
Let us assume instead that X is limiting parallel to I, with PXY Prove that P is limiting parallel to LHint: See Figure You must show that P meets l in a point V Choose any such that SPZ Show that sx meets Po in a point U such that UPQ Choose any W such that UXW and show that XW is between X and XR so that XW meets l in a point T Apply Proposition a to get V X Y Z W VR T Q Figure