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.
From Latin: perpendicularis vertical, as a plumb line. A line is perpendicular to another if it meets or crosses it at right angles (90Â°). Try this Drag the orange dot at point A. The line AB will be perpendicular to DF only when it meets it at 90Â°. Perpendicular means at right angles.A line meeting another at a right angle, or 90Â° is said to be perpendicular to it. In the figure above, the line AB is perpendicular to the line DF.rom Latin: perpendicularis vertical, as a plumb line. A line is perpendicular to another if it meets or crosses it at right angles (90Â°). Try this Drag the orange dot at point A. The line AB will be perpendicular to DF only when it meets it at 90Â°. Perpendicular means at right angles.