its non parallel sides are equal. it is vertically symmetrical. any one pair of sides are parallel like in all trapeziums. the co-interior angles between the parallel sides sum up to 90 degrees.
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true
trapezoid * * * * * Not true: an isosceles trapezoid does have a line of symmetry. A scalene triangle has none.
Yes, an isosceles trapezoid is symmetrical.
If you extend the two legs of an isosceles trapezoid until they intersect, you get an isosceles triangle.
No. It can be but need not be.