Condition of Perpendicular for Straight Lines

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If we have to lines say line 1 whose slope is m1 and line two whose slope is m2, then if m1 . m2 = - 1, then both line 1 and line 2 are perpendicular to each other. Same concept of this perpendicularity we discuss in above video lesson of straight line - condition of perpendicularity of lines.
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Finally a good explanation of the reason behind the formula

bithibiswas
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Awesome explaination👍
You explained each and every thing very well🤗🤗

AnjuKumari-vejf
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thanks londe😃😃
first attempt pe hi clear kr diya

yxxshvs