No, that is not true.
perpendicular lines.
plane
A right angle.
The lines are perpendicular.
A line is perpendicular to a plane when it is perpendicular on two lines from the plane
Two lines that are perpendicular to the same plane are coplanar. This means that they lay on the same plane.
Yes they are. It's a postulate: In a plane two lines perpendicular to the same line are parallel.
No, that is not true.
perpendicular lines.
plane
Parallel.Parallel.Parallel.Parallel.
A right angle.
The lines are perpendicular.
Two lines are parallel if and only if they have the same slope. Two lines are perpendicular if the product of their slopes is -1. If neither of these conditions are met, the lines are nether parallel, or perpendicular.
No.
There's no such thing as one perpendicular line. "Perpendicular" tells the relationship between two lines, or between a line and a plane. Two lines are perpendicular if they form a 90-degree angle where they cross.