lesson
Verifying Perpendicularity Using Slope
Use the slope formula to verify that two lines are perpendicular.
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Slope Criteria for Parallel and Perpendicular Lines
5 lessons
Goal
Use slope to verify parallelism and perpendicularity, prove slope criteria for parallel and perpendicular lines, and derive the midpoint formula using coordinates.
5 lessons
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Learning standards covered
111.41(b)(2)(B)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradederive and use the distance, slope, and midpoint formulas to verify geometric relationships, including congruence of segments and parallelism or perpendicularity of pairs of lines; and
Open Global Standard:OGM.11.GEO.6
111.41(b)(1)(D)Texas Essential Knowledge and Skills (TEKS) · Math · 10th Gradecommunicate mathematical ideas, reasoning, and their implications using multiple representations, including symbols, diagrams, graphs, and language as appropriate;
Open Global Standard:OGM.11.GEO.1
OGM.11.GEO.6OGM.11.GEO.1