identical slope so they never intersect each other, unless overlapped.Perpendicular lines
two lines form right angles to each other when they intersect. If the slope of first line is
, the slope of perpendicular line is the slope of perpendicular line is
. The product of the two slopes is -1.
- Definition of Parallel and Perpendicular Lines
- How does that relate to slope?
Determine whether the three points A (-2,-1), B(0,4) & C(2,9) all lie on the same line.
Determine the following slopes are parallel, perpendicular, or neither.
Given the points of two lines, determine when the lines are parallel, perpendicular or neither.
Line 1: (3,2) & (1,4); Line 2: (-1,-2) & (-3,-4)
Line 1: (5,6) & (7,8); Line 2: (-5,-6) & (-7,-8)
Show that the points A(-3,0), B(1,2) and C(3,-2) are the vertices of a right triangle.
Show that the points A(-1,-1), B(3,0), C(2,4) and D(-2,3) are the vertices of a square.