A rectangle is a quadrilateral with four right angles.
H
Practice makes perfect
Let's start with analyzing the statement.
If a polygon is a rectangle,
then it has four sides.
By the definition, a rectangle is a quadrilateral with four right angles. The word quadrilateral means that a rectangle has four sides. Therefore, the statement is true. Now we can examine the converse, which states the following.
If a polygon has four sides,
then it's a rectangle.
Let's draw an arbitrary polygon with four sides and see if it is a rectangle.
As we can see, ABCD is indeed a polygon with four sides. However, it is not a rectangle. We conclude that not every polygon that has four sides is a rectangle. Therefore, the converse is false. The answer is H.
