they for some shape
By definition, perpendicular lines form right angles.
Yes, all perpendicular angles form 90 degree angles.
right angles
Perpendicular
The contrapositive to the statement, "if two lines intersect to form right angles, then they are perpendicular," is "if two lines are not perpendicular, then they do not form right angles."
What is a 'Straight Angle'???? Perpendicular lines meet at 90 degrees ( right- angles).
If two lines intersect at right angles then they are perpendicular!
Perpendicular lines form right angles
Perpendicular angles
perpendicular
Perpendicular.
two lines that are perpendicular form right angles