Two lines that are in the same plane but do not intersect
Two lines that are not in the same plane and do not intersect
The ratio of vertical change (rise) to horizontal change (run) between any two points on a nonvertical line
A line that intersects two or more coplanar lines at different points
The general form of a linear equation: y=mx+b
Ax + By=C where A and B are not both zero
Two angles that are in the SAME CORNER or CORRESPONDING positions. (Shown above with angles 4 and 5 and again with angles 3 and 6.)
alternate interior angles
Two angles that lie BETWEEN the two lines and on OPPOSITE SIDES of the transversal. (Shown above with angles 4 and 5 and again with angles 3 and 6.)
consecutive interior angles
Two angles that lie BETWEEN the two lines and on the SAME SIDE of the transversal. (Shown above as angles 4 and 6 and again with angles 3 and 5)
alternate exterior angles
Two angles that lie OUTSIDE of the two lines and on OPPOSITE SIDES of the transversal. (Shown above as angles 2 and 7 and again with angles 1 and 8.)
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