Question

all rectangles have four right angles and opposite sides that are equal in length and parallel.
which of these quadrilaterals are rectangles?
quadrilateral rectangle/not rectangle
image of first quadrilateral dropdown
image of second quadrilateral dropdown
image of third quadrilateral dropdown

Explanation:

Step1: Analyze first quadrilateral

The first quadrilateral has four right angles (marked by the small squares) and opposite sides equal and parallel (visually, it's a rectangle - shaped figure with opposite sides parallel and equal). So it is a rectangle.

Step2: Analyze second quadrilateral

The second quadrilateral also has four right angles (four small squares at the corners) and opposite sides are equal and parallel (it's a square - like figure, and a square is a special case of a rectangle as it meets the rectangle's properties). So it is a rectangle.

Step3: Analyze third quadrilateral

The third quadrilateral is a triangle - like quadrilateral? No, it's a quadrilateral but it has only two right angles (the marked squares) and the sides are not in a way that opposite sides are equal and parallel (it's a non - rectangle shape). So it is not a rectangle.

Answer:

First quadrilateral: Rectangle
Second quadrilateral: Rectangle
Third quadrilateral: Not rectangle