The value of x according to the information given about the trapezoid is; 5.375
The sum of angles in a trapezoid like other Quadrilaterals is; 180°.
However, since the trapezoid is Isosceles, Top angles are equal and bottom angles are equal too.
Hence, we have;
Read more on isosceles trapezoid;
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Answer:
C. 11
Step-by-step explanation:
Kind people at the bottom of the "Experts" answer said it was 11