ABCD is a trapezoid. Drag any of the corner points to adjust the trapezoid. Use the checkboxes to show or hide measures of the trapezoid. [br]1. Do you see an pattern in the lengths of the sides? Can you make a trapezoid that has no congruent sides?[br]2. Do you see any patterns in the angles? Can you make a trapezoid that has no congruent sides?[br]3. Make a trapezoid in which angle C is congruent to angle D. What other measures are now also equal?[br]4. Is there a relationship between angles A and D? angles B and C?