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Name
Parallel Lines Study Guide:
Date
Block__
TEST DATE: 10/23-24/14
Important New Vocabulary:
Parallel Lines
Skew Lines
Transversals
Corresponding Angles
Alternate Exterior
Angles
Consecutive Interior
Angles
Parallel Planes
Alternate Interior
Angles
Consecutive Exterior
Angles
Key Concepts & Skills:
 Identify angle relationships (e.g. corresponding) when two lines (not parallel)
are intersected by a transversal
 Identify parallel, perpendicular and skew lines and parallel planes given in a
diagram
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Perpendicular Line Theorems
o If 2 lines intersect to form a linear pair of congruent angles, then the
lines are perpendicular.
o If two sides of two adjacent acute angles are perpendicular, then the
angles are complementary.
o If two lines are perpendicular, then they intersect to form four right
angles.
Apply the parallel line theorems (e.g. Alternate Exterior Angle Theorem) to
find angle measures.
Apply the converses of the parallel line theorems to prove lines are parallel.
Apply the Dual Parallel and Dual Perpendicular Theorems to prove lines are
parallel.
Write equations in slope-intercept form.
Find the slope of lines given two points or an equation.
Determine whether lines are parallel, perpendicular or neither by analyzing
the slopes of the lines.
Write and the equation of a circle given various scenarios.
Online Resources: Use your textbook, content review notes, and binder as a
resource.