5, 10, 15, 20. i think that's what it means.get a second opinion.
The best approximation will be 10×6 because six pieces of 10 is 60
YES, this is correct. All quadrilaterals whether is a trapezoid, parallelogram, rhombus and others, they are all polygons and all they have 4 sides and 4 angles. We know that a polygon is a figure with at least three sides and three angles.
Not all polygons are quadrilateral, this is also correct since some polygons have five or more sides and angles.
