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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Eureka Math/EngageNY
Geometry (Eureka Math/EngageNY)
Module 4: Connecting algebra and geometry through coordinates
Topic B: Perpendicular and parallel lines in the Cartesian plane
Topic B: Perpendicular and parallel lines in the Cartesian plane
Parallel & perpendicular lines intro
Parallel & perpendicular lines from graph
Parallel & perpendicular lines from graph
Parallel lines from equation
Parallel lines from equation (example 2)
Parallel lines from equation (example 3)
Perpendicular lines from equation
Parallel & perpendicular lines from equation
Writing equations of perpendicular lines
Writing equations of perpendicular lines (example 2)
Write equations of parallel & perpendicular lines
Proof: parallel lines have the same slope
Proof: perpendicular lines have opposite reciprocal slopes
