alternate interior angles
two lines that intersected by a tranversal, a pair of nonadjacent angles that lie on opposite sides of the transversal and between the other two lines.
the difference of the x values
the difference of the y values
two lines intersected by a transversal a pair of angles that lie on the same side of the tranversal and on the same sides of the other two lines
a line perpidicular to a segemnt at the segments mid point
distance form a point to line
the length of the perpdicular segment from the point of the line.
Lines in the same plane that do not intersect
Two lines that intersect to form right angles
lines that do not intersect and are not coplanar
alternate exterior angles
Angles that lie outside a pair of lines and on opposite sides of a transversal.
planes that do not intersect
a line that intersects two or more coplanar lines in more than one point
same-sided interior angles
when a transversal intersects two lines, same sided interior angles are on the same side of the transversal and on the inside of the given lines