Question

write a counterexample to show that the conjecture is false. if a figure has four sides, then it is a rectangle.

Explanation:

Step1: Recall the properties of a rectangle

A rectangle has four - sided with four right angles.

Step2: Find a four - sided figure without right angles

A rhombus has four sides but its angles are not necessarily right angles.

Answer:

A rhombus is a four - sided figure that is not a rectangle.