Trapeziotrapezoid
Trapeziotrapezoid is not a standard term in geometry. It does not correspond to a single well-defined figure in widely used references, and its meaning, if any, can vary by author or context. In some cases it may be a neologism or a misnomer for a trapezoid, a trapezium, or a compound figure formed from two trapezoids.
One informal interpretation is that a trapeziotrapezoid refers to a figure constructed by joining two trapezoids
A second, more cautious interpretation is to treat the term as a nonstandard synonym for trapezoid or
Because the term is not universally defined, readers should consult the source where it appears to determine