Theory:

A trapezium is a quadrilateral with one pair of opposite side parallel.
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For the trapezium \(ABCD\), the following will be true:
  • \(AB||DC\),where \(AB\) and \(DC\) are parallel sides
  • \(CE ⊥ AB\), where \(CE\) is perpendicular to \(AB\)
  • \(DF ⊥ AB\), where \(DF\) is perpendicular to \(AB\)
  • \(CE = DF = h\), where \(h\) is the height of the trapezium