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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 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.