College Geometry—Parallel Lines, Distances, and Angle Sums
About Parallel Lines
Parallel lines
Straight lines which lie in the same plane and do not intersect however far they are extended.
Transversal
A line that cuts across two or more lines
Interior angles
When two parallel lines are cut by a transversal, these are the angles formed between the two lines.
Exterior angles
When two parallel lines are cut by a transversal, these are the angles formed outside the two lines.
Corresponding Angles
When two parallel lines are cut by a transversal, these are the angles on the same side of the transversal and
on the same side of the lines.
(They form a capital F)
Alternate Interior Angles
When two parallel lines are cut by a transversal, these are the angles between the two lines and on opposite
sides of the transversal.
(They form a capital Z or N)
Principles and Properties of Parallel Lines
Through a given point not on a given line, one and only one line can be drawn parallel to a given line.
Two lines are parallel if a pair of corresponding angles are congruent.
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This note was uploaded on 05/12/2011 for the course TED 410 taught by Professor Espisito during the Spring '11 term at CSU Dominguez Hills.
 Spring '11
 Espisito

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