Defining a square
Step 1: A square is a four
-sided polygon with all sides of equal length and all angles being right angles (90°).
Evaluating options
Step 2: Analyze the options, assuming “arms” means sides:
- (A) Whose four sides are equal: Correct, as a square has four equal sides.
- (B) Whose three arms are equal: Incorrect, as this describes a triangle (equilateral).
- (C) Whose two arms are equal: Incorrect, as this may describe a rectangle or isosceles shapes.
- (D) Which is round: Incorrect, as a square has straight sides, unlike a circle.
Thus, the correct answer is (A).