If two lines are perpendicular with respect to each other, then the product of their slopes is equal to .
When two lines of slopes m1 & m2 are perpendicular to each other. Product of their slopes is 1
Statement 1 : If two lines are perpendicular, then product of their slopes is –1. Statement 2: If the product of slopes of two lines is –1, then these lines will be perpendicular.
If the slopes of two lines are equal, then the lines are __ to each other.
If two lines are perpendicular, then the product of their slope is _____.
Two lines, with slopes 'm' and 'n', are parallel to each other if ______.