Which shape has four equal sides and four right angles?

• A. Rectangle
• B. Trapezoid
• C. Square
• D. Rhombus

Answer: (C)

A shape that has four equal sides and four right angles is known as a square. This specific combination of characteristics sets the square apart from other shapes.

While a rectangle also has four right angles, its sides are not necessarily equal—only the opposite sides are of equal length. A trapezoid is defined by having at least one pair of parallel sides, but does not have the properties needed to guarantee equal length sides or right angles. A rhombus has four equal sides, but its angles are not constrained to being right angles; it can have acute and obtuse angles instead.

In contrast, a square uniquely combines both attributes of equal side lengths and right angles, classifying it distinctly within geometric shapes. Thus, identifying a square as the answer acknowledges its specific definition and properties that fulfill the requirements of the question.