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695Points: The Building Blocks of Geometry
696Lines: Infinite Straight Paths
697Line Segments and Rays
698Collinear and Coplanar Points
699Planes: Flat Surfaces Extending Infinitely
700Intersection of Lines and Planes
701Postulates of Points, Lines, and Planes
702Distance and the Ruler Postulate
703Measuring Angles and Angle Notation
704Classifying Angles by Measure
705Adjacent Angles
706Complementary Angles
707Supplementary Angles
708Linear Pairs
709Vertical Angles
710Angle Bisectors
711Perpendicular Lines and Right Angles
712Solving Multi-Step Angle Problems
713Introduction to Transversals
714Corresponding Angles
715Alternate Interior Angles
716Alternate Exterior Angles
717Same-Side Interior Angles
718Using Angle Relationships to Find Measures
719Proving Lines are Parallel
720Parallel Lines Cut by Multiple Transversals
721Applications of Parallel Line Properties
722Understanding Congruence
723Congruent Segments and Angles
724Congruence Transformations
725Corresponding Parts of Congruent Figures
726Introduction to Similarity
727Scale Factor
728Properties of Similar Figures
729Distinguishing Congruence from Similarity

695Points: The Building Blocks of Geometry
696Lines: Infinite Straight Paths
697Line Segments and Rays
698Collinear and Coplanar Points
699Planes: Flat Surfaces Extending Infinitely
700Intersection of Lines and Planes
701Postulates of Points, Lines, and Planes
702Distance and the Ruler Postulate
703Measuring Angles and Angle Notation
704Classifying Angles by Measure
705Adjacent Angles
706Complementary Angles
707Supplementary Angles
708Linear Pairs
709Vertical Angles
710Angle Bisectors
711Perpendicular Lines and Right Angles
712Solving Multi-Step Angle Problems
713Introduction to Transversals
714Corresponding Angles
715Alternate Interior Angles
716Alternate Exterior Angles
717Same-Side Interior Angles
718Using Angle Relationships to Find Measures
719Proving Lines are Parallel
720Parallel Lines Cut by Multiple Transversals
721Applications of Parallel Line Properties
722Understanding Congruence
723Congruent Segments and Angles
724Congruence Transformations
725Corresponding Parts of Congruent Figures
726Introduction to Similarity
727Scale Factor
728Properties of Similar Figures
729Distinguishing Congruence from Similarity

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Lesson 719 of 3,121·17. Geometry — FoundationsPro lesson

Proving Lines are Parallel

Use the converses of angle relationships to prove two lines are parallel given information about angle pairs.

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