No. The word "quadrilateral" means "having four sides".
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A nonagon has nine sides and a pentagon has five, so four more sides....
No; the definition of a quadrilateral is a four-sided polygon, thus, it must have 4, and only 4, sides.
-- A trapezoid always has.-- Any polygon with more than four sides can have, but doesn't always.
OK, SO a shape with fewer than four straight sides is a triangle, which has three (3) straight sides. Hope this helps! LOOPDOP says: A circle is a shape. And it has no straight sides..... isn't that "fewer"?
A heptagon has 7 sides and a pentagon has 5 sides so a heptagon has 2 more sides than a pentagon