A 3-sided polygon has 0 parallel sides.
A 4-sided polygon can have 0, 2 or 4 parallel sides.
A 5-sided polygon can have 0, 2, 3 or 4 parallel sides.
In general, an n-sided polygon can have 0, 2, 3, ..., n-1, or n parallel sides where n>5.
A polygon with n sides can have n pairs of parallel sides (if n is even) or (n-1)/2 pairs if n is odd AND greater than 3. But it need not have any.
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A parallelogram has 2 pairs of parallel sides.
B. False
The polygon may have 2n sides, where n is any whole number greater than 1
no a regular polygon has 360 degrees and it can have 4 or more sides
A trapezoid or, in Britain, a trapezium. Other than in Britain, a trapezium is a quadrilateral with no parallel sides at all.
The parallel sides of a polygon are sides that are segments of parallel lines. A polygon need not have any parallel lines. A triangle, for example, is a polygon that cannot have parallel lines.
5 pairs of parallel sides.
None.
None. Since the number of sides is odd, there can be no parallel sides.
Infinitely many. Every regular polygon with 2n sides has n pairs of parallel sides. Then there are irregular polygons which can have parallel sides. And there are also irregular shapes which have parallel sides.
Any polygon with four or more sides can have parallel sides.
A polygon with 4 or more sides can have a pair of parallel sides.
No. A parallelogram, for example, is not a regular polygon. Even a rhombus, with parallel sides of equal lengths is not.
A decagon has 10 sides. Any regular polygon with four or more sides will have pairs of sides that are parallel. A decagon will have 5 pairs of parallel sides.
65
None.
Not all polygon have two pairs of parallel sides. For example, a square will, but not a triangle.