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Does a triangle have a set of parallel lines?
No. it is the only polygon that can not have parallel lines all though any regular polygon with an odd number of lines will have no parallel lines If three points were in a straight line it could be argued that these formed a triangle with parallel sides, though really it would be just a line; or if we had a triangle with infinite height the sides would be parallel. In any other case, no.
Does a trapezoid have opposite sides parallel?
no, only one side of parallel lines
How many parallel sides does a semi circle have?
a semi - circle has zero parallel lines
Does a trapezoid have 1 set of parallel lines?
A quadrilateral must have one and only one set of a parallel sides to be a trapezoid.
What shape has one parallel side only?
Answer: trapezoid Answer: There is no such thing as "one parallel side". Parallel refers to the relationship between TWO lines - so, two lines can either be parallel, or not be parallel. A shape can have one PAIR of parallel sides (e.g. a trapezoid), two PAIRS of parallel sides (e.g., a parallelogram), or more than that (e.g., a regular hexagon has three pairs of parallel sides).
