Two lines that form a 90 degree angle are considered perpendicular.
Two angles that add to 90 degrees are called complementary.
It is an indicator that the angle formed at that point is a right angle (90 degrees).The small square at the crossing point of two perpendicular lines serves to indicate that the two lines indeed form an angle of 90 degrees.
-- one of them is 90 degrees -- the other two add up to 90 degrees
Two lines are perpendicular if they meet each other at 90 degrees which is a right angle.
Lines that cross each other at 90 degrees are perpendicular lines.
The angles are complimentary when they add to 90 degrees.
Perpendicular lines intersect each other at 90 degrees
Two angles that add up to 90 degrees are called complementary angles.
Complementary Angles add up to 90 degrees. Supplementary Angles add up to 180 degrees.
Two lines that form a 90 degree angle are considered perpendicular.
90 degrees
The angle between two perpendicular lines is 90 degrees. I am not sure whether you are referring to any other angles, and if yes, which ones.
Complementary angles add up to 90 degrees
Two angles that add to 90 degrees are called complementary.
Orthogonal lines are two lines which are perpendicular, i.e. 90 degrees, to each other.
It is an indicator that the angle formed at that point is a right angle (90 degrees).The small square at the crossing point of two perpendicular lines serves to indicate that the two lines indeed form an angle of 90 degrees.