What is a Quadrilateral: A quadrilateral is a four-sided two-dimensional shape.
What is an Equilateral: An equilateral is having all sides the same length.
What is a Parallelogram: A Parallelogram is a four-sided plane rectilinear figure with opposite sides parallel.
A square is a quadrilateral with all four angles right angles and all four sides of the same length. So a square is a special kind of rectangle, it is one where all the sides have the same length
A rectangle is a quadrilateral with all four angles right angles. This proves that the opposite sides are parallel and of the same lengths and that is why every square is a rectangle because it is a quadrilateral with all four angles right angles.
A Rhombus is a flat shape with 4 equal straight sides. Opposite sides are parallel, and the opposite angles are equal. And the diagonals "p" and "q" of a rhombus bisect each other at right angles. with the info I have, I can tell that a rhombus shape is a Parallelogram.
A trapezoid is a quadrilateral with at least one pair of parallel sides. No other features matter.
Unfinish.
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