Kathleen says that all quadrilaterals have right angles. Grace says that quadrilaterals do not have to have right angles. Explain who is correct.

Answer 1

Grace is correct. Not all quadrilaterals have right angles. A quadrilateral is a four-sided polygon, and there are many different types of quadrilaterals, such as squares, rectangles, parallelograms, rhombuses, and trapezoids. Some of these types of quadrilaterals do have right angles, such as squares and rectangles, but others, like parallelograms and rhombuses, do not necessarily have right angles. Therefore, Kathleen's statement that all quadrilaterals have right angles is not accurate.