Which geometric shape has four equal sides and four right angles?

The geometric shape that has four equal sides and four right angles is a square. A square is a specific type of rectangle that not only has all angles measuring 90 degrees but also has all sides of equal length. This unique combination of properties—equal side lengths and right angles—distinguishes the square from other shapes such as rectangles, which can have unequal side lengths, rhombuses, which have equal sides but do not generally have right angles, and trapezoids, which do not have to have equal sides or right angles. Understanding the definition and properties of a square is fundamental in geometry, as it represents a common example of a regular polygon with those specific characteristics.