Writing equations of perpendicular lines | Mathematics I | High School Math | Khan Academy - By Khan Academy
Perpendicular lines are lines that intersect each other at right angles. In this video, Sal Khan demonstrates how to know which lines are perpendicular when solving an algebraic equation. Mr. Khan uses the Paint Program (with different colors) to illustrate his points. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. (03:28) There is a lot of information on the screen--the viewer may want to open the video to 'full screen.'
Writing equations of perpendicular lines | Mathematics I | High School Math | Khan Academy is a free educational video by Khan Academy.It helps students in grades HS practice the following standards HSG.GPE.B.5.
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1. HSG.GPE.B.5 : Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point)..
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