Answer:
5) D. Trapezoid.
6) C. Trapezoid.
7) B. All parallelograms are quadrilaterals.
8) A. A Polygon is a closed figure with. 3 or more curved or straight sides.
<em>Can I please have brainliest?</em>
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(6x+19) +x=180 because they are a linear pair
combine like terms 7x+19=180
isolate x by subtracting 19 and dividing by 7
x=23
