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26 May, 06:48

If AD = 12 cm, DB = 8.4 cm, AB = 17.4 cm, and ED = 7.8 cm, what is the measure of DC?

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  1. 26 May, 07:09
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    Similar triangles, I'm assuming. Then this:

    DB/DC = AD/ED

    7/DC = 10/6.5

    10 DC = 45.5

    DC = 4.55 cm
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