Trapezoid

A shape I never,
Quite remember,
Like the days,
That has September,
Is the shape called trapezoid,
It's like my brain is in a void,
When I think of trapezoid!
Has 4 sides,
But not a square!
Not the same!
Stop right there!
Can it catch things like a trap?

Can you wear it like a cap?

Turn it over,
Makes a boat,

Sail through a castle's moat!
Quadrilateral that's unique,
Definition's what I seek!
What the heck is trapezoid?
I'll go ask my uncle Floyd,
Look at me,
And listen well,
2 sides of 4,
Are parallel...

A trapezoid is a quadrilateral with at least one pair of parallel sides....also called trapezium...