Math

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If ∆ ABC ~ ∆ DEF, BC = 12 cm, EF = 10 cm, and AC = 18 cm, find DF.

  • Math -

    The triangles are similar (but not congruent).

    That means that corresponding sides are all in the same ratio.
    BC/EF = 12/10 = AC/DF = 18/DF

    DF = 18*(5/6) = 15

  • Math -

    by ratios

    DF/10 = 18/12

    solve for DF

  • Math -

    Please do not repost the same question without checking if your last post has been answered.
    It causes unnecessary work by the tutors

    http://www.jiskha.com/display.cgi?id=1294796964

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