If a rectangle has equal lengths, equal widths, and equal ___, then the layout is said to be square.

If a rectangle has equal lengths, equal widths, and equal ___, then the layout is said to be square.

• A. Diagonals
• B. Angles
• C. Sides
• D. Corners

Answer: (A)

A square is a kind of rectangle where every side has the same length. That one property—all four sides equal—is what makes a square different from a general rectangle, even though diagonals and angles have their own standard relationships in rectangles. Diagonals are equal in all rectangles, so that won’t distinguish a square. Angles in a rectangle are right angles, which also doesn’t set a square apart. The key trait that defines a square is that all four sides are equal, so the missing word is sides.

A square is a kind of rectangle where every side has the same length. That one property—all four sides equal—is what makes a square different from a general rectangle, even though diagonals and angles have their own standard relationships in rectangles. Diagonals are equal in all rectangles, so that won’t distinguish a square. Angles in a rectangle are right angles, which also doesn’t set a square apart. The key trait that defines a square is that all four sides are equal, so the missing word is sides.