Mathematics, 15.11.2020 21:50 smurfhoot

A quadrilateral has congruent side lengths. 2 opposite angles have measures of 100 degrees. The other 2 opposite angles have measures of 70 degrees and (5 x) degrees. What is the value of x?

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A quadrilateral has congruent side lengths. 2 opposite angles have measures of 100 degrees. The othe...