How many sides does a polygon have if the sum of the measures of the interior angles is 5940

Find the value of x. round the length to the nearest tenth

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

Tom drove 206 miles in 3.9 hours. estimate his average speed.