Question

A quadrilateral whose all sides, diagonals, and angles are equal is a

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

Answer 1

The correct option is A

Square

Explanation for the correct options:

Properties of square:

A square is a four-sided polygon that has it’s all sides equal in length and the measure of the angles are $90°$

Properties of a Square

• All four interior angles are equal to $90°$
• All four sides of the square are congruent or equal to each other
• The opposite sides of the square are parallel to each other
• The diagonals of the square bisect each other at $90°$
• The two diagonals of the square are equal to each other
• The square has $4$ vertices and $4$ sides
• The diagonal of the square divides it into two similar isosceles triangles
• The length of the diagonals is greater than the sides of the square

Hence, the correct option is (A)