An isosceles trapezium is one in which:

An isosceles trapezium is one in which:
  1. All sides are equal
  2. The non-parallel sides are equal
  3. Both pairs of opposite sides are equal
  4. Diagonals bisect each other

Solution

In an isosceles trapezium the two non-parallel sides (legs) are equal in length.

Asked in: IMO

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