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Does a hexagon have no parallel sides?
Most hexagons have no parallel lines. A regular hexagon has 3 sets of parallel lines. A hexagon can have 0, 2, 3, 4, 5, or 6 parallel lines.
When is a quadrilateral not a trapezoid?
Most of the time.If a quadrilateral contains no parallel lines or two pairs of parallel lines then it is not a trapezium.
Is it possible to draw two lines on a sphere that are parallel?
If by parallel, you mean two lines that do not intersect, yes, it is possible to draw them on the surface of a sphere. They will end up being circles, and most pairs will not be equal in size. If you add the idea that the two lines also continue to infinity to the definition, then you cannot draw such things on the surface of a sphere.
What is the difference between trapezoid and a rhombus?
A trapezoid has one pair of parallel sides, a rhombus has two.A trapezoid can have at most three sides of equal length, though it need not have any. All four sides of a rhombus must be the same length.
How can we rewrite Euclid's fifth postulate?
Euclid's fifth postulate: If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles, then the two lines inevitably must intersect each other on that side if extended far enough.It can be rewritten: If two lines are drawn which intersect a third at angles of 90 degrees, the two lines are parallel and will not intersect each other.It has also been rewritten as Playfair's axiom:In a plane, given a line and a point not on it, at most one line parallel to the given line can be drawn through the point.
