Question

the movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answe
which of the following statements is true?
all rectangles are parallelograms.
all rectangles are squares.
a trapezoid must have congruent sides.
every angle in a quadrilateral must be less than 180°.

Explanation:

• A rectangle has opposite sides equal and parallel, which are the properties of a parallelogram. So all rectangles are parallelograms.
• A square is a special rectangle with all sides equal. But not all rectangles have all sides equal, so not all rectangles are squares.
• A trapezoid is a quadrilateral with one pair of parallel sides. It doesn't require congruent sides.
• A concave quadrilateral has an angle greater than \(180^{\circ}\).

Answer:

All rectangles are parallelograms.