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Parallel Lines
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Terms in this set (14)
Alternate Exterior Angles
A pair of angles that lie on opposite sides of the transversal and outside the other two lines.
Alternate Interior Angles
A pair of angles that lie within two lines and on opposite sides of a transversal.
Corresponding Angles
A pair of angles that lie on the same side of the transversal and on the same side of the other two lines.
Same Side Interior Angles
A pair of angles that lie within two lines and on the same side of a transversal.
Corresponding Angle Postulate
If 2 parallel lines are cut by a transversal, then the corresponding angles are congruent.
Alternate Interior Angle Theorem
If 2 parallel lines are cut by a transversal, then the alternate interior angles are congruent.
Alternate Exterior Angle Theorem
If 2 parallel lines are cut by a transversal, then the alternate exterior angles are congruent.
Same Side Interior Angle Theorem
If 2 parallel lines are cut by a transversal, then the same side interior angles are supplementary.
Transversal
A line that intersects 2 coplanar lines at 2 different points.
Parallel Lines
Coplanar lines that do not intersect. Their slopes are equal.
Perpendicular Lines
Lines that intersect at a right angle. Their slopes are opposite reciprocals.
Skew Lines
Noncoplanar lines that are not parallel and do not intersect.
For example Line ON and Line LP
Parallel Planes
Planes that do not intersect.
For example Plane MNR and Plane LPS
Perpendicular planes
Planes that intersect at right angles.
For example Plane SRN and PSR
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