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  1. Trapezoid - Wikipedia

  2. Trapezoids - Definition, Shape, Area, Formulas, Properties and …

  3. Trapezoid - Math is Fun

  4. Trapezoid – Definition, Properties, Formulas & Examples - Math …

  5. Trapezoid – Definition, Types, Properties, Examples, FAQs

  6. Trapezoid Shape: Definition, Area Formula and Fun Facts

  7. Trapezoid - Shape, Properties, Formula, Definition, Examples

  8. Trapezoid Calculator

  9. Trapezoid -- from Wolfram MathWorld

  10. Trapezoid – Shape, Properties, Formula, Definition, Examples