Section One
Parallel lines- Lines that are coplanar and do not intersect.
Perpendicular lines- Lines that intersect at 90 degree angles.
Skew lines- Non coplanar lines that are not parallel and do not intersect.
Parallel planes- Planes that do not intersect.
Transversal- A line that intersects two coplanar lines at two different points
Corresponding angles- Angles that lie on the same side of the transversal.
Alternate interior angles- Nonadjacent angles that lie on opposite sides of the transversal.
Alternate exterior angles- Angles that lie on opposite sides of the transversal.
Same-side interior angles- Also called consecutive interior angles. Angles that lie on the same side of the transversal.
Perpendicular lines- Lines that intersect at 90 degree angles.
Skew lines- Non coplanar lines that are not parallel and do not intersect.
Parallel planes- Planes that do not intersect.
Transversal- A line that intersects two coplanar lines at two different points
Corresponding angles- Angles that lie on the same side of the transversal.
Alternate interior angles- Nonadjacent angles that lie on opposite sides of the transversal.
Alternate exterior angles- Angles that lie on opposite sides of the transversal.
Same-side interior angles- Also called consecutive interior angles. Angles that lie on the same side of the transversal.