The apex for a right triangle is always implied to point to the top edge of the bounding rectangle. To switch vertical orientation, set the InvertY property to true.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2