To celebrate World Wetlands Day, the Ministry of Environment and Tourism held a joint launch of the wetlands and ecotourism promotional material and biome posters as a demonstration of the country's commitment to wetlands and water con servation.
Surface: Perpendicularity is a fairly common symbol that requires the referenced surface or line to be perpendicular or 90Â° from a datum surface or line. Perpendicularity can reference a 2D line, but more commonly it describes the orientation of one surface plane perpendicular to another datum plane.urface: Perpendicularity is a fairly common symbol that requires the referenced surface or line to be perpendicular or 90Â° from a datum surface or line. Perpendicularity can reference a 2D line, but more commonly it describes the orientation of one surface plane perpendicular to another datum plane.
1.1 [mass noun] (usually the perpendicular) Perpendicular position or direction: the wall declines from the perpendicular a little inward. More example sentences. 1  It is gilded, sinuous (especially in the context of Lower Manhattan's perpendiculars and horizontals) and represents Civic Fame..1 At an angle of 90Â° to the ground; vertical: the perpendicular cliff. More example sentences. Synonyms. 1  Most people touring the 302-square-kilometre Lushan National Park will be unruffled when they stand in front of perpendicular cliffs and look down on deep valleys.