The name Delphia is of English origin. The meaning of Delphia is brother. Delphia is generally used as a girl's name. It consists of 7 letters and 3 syllables and is pronounced Del-phi-a.
Perpendicular Lines. Quatr.us Math Geometry Lines. Perpendicular lines. Two lines are perpendicular if they cross at right angles. You can test this by extending the lines until they cross (if they do not cross then they are parallel).erpendicular Lines. Quatr.us Math Geometry Lines. Perpendicular lines. Two lines are perpendicular if they cross at right angles. You can test this by extending the lines until they cross (if they do not cross then they are parallel).
Perpendicular Lines and Intersecting Lines. In case of a two dimensional plane, two intersecting lines are said to be perpendicular lines if they intersect at right angles. In three dimensional space, if two lines are perpendicular, the dot product of their direction rations is zero. It is to be noted that the perpendicular lines need not intersect.