Question

To construct a square, we need to know:

• A. All sides
• B. All angles
• C. One side
• D. One angle

Answer 1

The correct option is C

One side

The explanation for the correct option.

A square is a figure whose has four sides of equal length.

Thus, by knowing the measurement of one side, we can easily understand the length of the other three sides.

A square inherently has all four angles of equal to $90°$

Hence, the option $C$is correct.

The explanation for the incorrect option.

Since the square has all four sides are equal in length and all four angles are equal to $90°$.

Therefore, only one side is enough to construct a square.

Hence, the options $A,B,\mathrm{and}D$ are incorrect.

Hence, the option $C$ is correct.