Mathematics Pacing Resource Document
Geometry – Points, Lines, Angles, and Planes Strand
Standard:
G.PL.4: Know that parallel lines have the same slope and perpendicular lines have opposite reciprocal slopes. Determine if a
pair of lines are parallel, perpendicular, or neither by comparing the slopes in coordinate graphs and in equations. Find the
equation of a line, passing through a given point that is parallel or perpendicular to a given line.
I can:
 Know that parallel lines have the same slope.
 Know that perpendicular lines have opposite reciprocal slopes.
 Determine whether a pair of lines are parallel, perpendicular or neither.
 Write the equation of the line passing through a given point that is parallel or perpendicular to a given line.
Lesson Plans/Print Activities:
Web-based Practice:
 New Jersey Center for Teaching and Learning: Geometry
- Parallel and Perpendicular Lines Presentation
Standard Geometry - McDougal Littell Textbook
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Sec. 3.1 Identify Pairs of Lines and Angles
Sec. 3.2 Use Parallel Lines and Transversals
Sec. 3.3 Prove Lines are Parallel
Sec. 3.4 Find and Use Slope of Lines
Sec. 3.5 Write and Graph Equations of Lines
Sec. 2.6 Prove Theorems about Perpendicular Lines
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Khan Academy: Geometry
- Angles and Intersecting Lines: Angles between Intersecting and
Parallel Lines
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Virtual Nerd: Geometry
- Parallel and Perpendicular Lines: Parallel Lines and Transversals
Honors Geometry – Glencoe McGraw-Hill Textbook
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Sec. 3.1 Parallel Lines and Transversals
Sec. 3.2 Angles and Parallel Lines
Sec. 3.3 Slopes of Lines
Sec. 3.4 Equations of Lines
Sec. 3.5 Proving Lines Parallel
Sec. 3.6 Perpendiculars and Distance
Indianapolis Public Schools
Curriculum and Instruction