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Learn how to use algebra to find parallel and perpendicular lines with examples and exercises. See how to check if two lines are parallel or perpendicular by using slopes, y-intercepts, and the negative reciprocal rule.
Learn how to identify parallel and perpendicular lines on the coordinate plane with this video lesson by Sal Khan. See examples, definitions, and questions from other learners.
Parallel lines are lines that never intersect, and they form the same angle when they cross another line. Perpendicular lines intersect at a 90-degree angle, forming a square corner. We can identify these lines using angles and symbols in diagrams.
Perpendicular lines are lines in the same plane that intersect at right angles (\(90\) degrees). Two nonvertical lines in the same plane, with slopes \(m_{1}\) and \(m_{2}\), are perpendicular if the product of their slopes is \(−1: m1⋅m2=−1\).
Learn how to identify and differentiate parallel and perpendicular lines in geometry using their characteristics, symbols, and equations. See examples, worksheets, and practice questions on parallel and perpendicular lines.
Parallel and Perpendicular Lines. Maths revision video and notes on the topic of finding the equation and the gradient of parallel and perpendicular lines.
Learn how to construct a line, parallel or perpendicular, to a given reference line and a fixed point, and in the process learn how to utilize the Point-Slope Form and Slope-Intercept Form of a Line.
