A general trapezoid is a 4 sided quadrilateral with a pair opposite parallel lines of different lengths and no lines of symmetry
But an isosceles trapezoid has the same properties as above except that it has 1 line of symmetry
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A trapezoid, in general, does not have congruent sides.
A trapezoid need not have any lines of symmetry. An isosceles trapezoid has one vertical line of symmetry.
In general, trapezoids do not have right angles. In fact, a trapezoid with a right angle is a special case, called a rectangle.
No, the diagonals of a trapezoid do not necessarily bisect each other. Only in an isosceles trapezoid, where the two non-parallel sides are congruent, will the diagonals bisect each other. In a general trapezoid, the diagonals do not bisect each other.
No. A trapezoid must have one pair of parallel sides, and a parallelogram must have two pair.But a quadrilateral in general doesn't necessarily have any parallel sides.