Reflect a Trapezoid To Make a Rhombus
REFLECT A TRAPEZOID TO GET A RHOMBUS:
Below shows one isosceles and one non-isosceles case:
Begin with a trapezoid, then reflect it over one of its nonparallel sides to get another trapezoid. Reflect the new trapezoid over the TOP parallel side of the original trapezoid. The images intersect at certain places to create a rhombus with equal sides.