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Perpendicular Lines

Learn more: http://www.khanacademy.org/video?v=0671cRNjeKIU04_L2_T2_we1 : Perpendicular Lines
Length: 03:29

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  • What are ratios?

    Hello world,This is Anthony Dsuza.R atio is a relationship between two numbers indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the ratio ...