1. A polygon with 4 sides & 4 angles
Quadrilateral
A polygon with 4 sides & 4 angles
Square
Parallelogram
Trapezoid
Rectangle
Isosceles trapezoid
Rhombus

2. Trapezoids A quadrilateral with one pair of parallel sides.
Isosceles trapezoid
Trapezoid
Also has one pair of opposite congruent sides

3. Parallelogram
A quadrilateral with BOTH pairs of opposite sides parallel and congruent.

4. Rhombus
A quadrilateral with 4 congruent sides and opposite sides are parallel.

5. Rectangle
A quadrilateral with opposite sides congruent and parallel. Has four right angles.

6. Square
A quadrilateral with 4 congruent sides and 4 right angles. Opposite sides are parallel.

7. Why is each statement below true?
A rhombus is always a parallelogram, but a parallelogram isn’t always a rhombus.
2. A rectangle is a parallelogram, but a parallelogram is not necessarily a rectangle.
3. A square is a rectangle, but a rectangle does not have to be a square.