Perpendicular line.
A line that intersects another line at 90 degrees
It is perpendicular line segment
It is a perpendicular bisector line
It is a perpendicular bisector line
It is perpendicular line segment
It is called a perpendicular bisector.
The opposite is perpendicular (a straight line that hits another at a right angle).
Perpendicular Bisector
A straight angle is 180 degrees, or twice the measure of a right angle. Therefore, it looks like a right angle that has been folded out into a flat line. Another way is to look at the arch of a 180 degree angle as a semicircle. Connect both ends of the semicircle and you have a straight line.
right angle
You use the right angle next to an acute angle perhaps and you see that when a angle is closer together it is an acute angle and if it is spread apart or farther apart from a right angle it is an obtuse angle. If the angle is a straight line and doesn't look bent like a right angle it is a straight angle.
In a right angle triangle, the line across from the riht angle is called the hypotenuse.