Triangle DEF is a congruent to triangle GHI. Side DE measures 52. Side GH measures 10x-13. Side GHI measures 12x-16. Find the value of x.
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DE=GH by CPCTC 52=10x-13 10x=52+13 10x=65 x=65/10 x=13/2 not so sure... by the way, what do you mean side GHI measures 12x-16 isn't it an angle???