11. Which shape is a quadrilateral and a rectangle? (A) Rhombus (B) Parallelogram (C) Square (D) Trapezoid

Did you know that a rectangle is a specific type of quadrilateral? In fact, all rectangles are parallelograms, but not all parallelograms are rectangles! A rectangle must have four right angles and opposite sides that are equal in length, making it a perfect candidate for creating everything from simple structures to intricate designs in architecture. Speaking of shapes, if you're ever tasked with memorizing quadrilaterals, remember the unique characteristics that set them apart! For instance, while a rhombus has all sides equal, its angles can vary. Watch out for those tricky details; mixing features of squares and rhombuses can lead to some common mistakes, especially during tests!