Question

In which of the following figures, the diagonals are always equal?
1. Rectangle
2. Square
3. Rhombus
4. Isosceles trapezoid

• A. $2,3,\text{and}4$
• B. All four figures
  
• C. $1,2,\text{and}3$
• D. $1,2,\text{and}4$

Answer 1

The correct option is D $1,2,\text{and}4$

The diagonals of a square are equal and they bisect each other at right angles.
The diagonals of a rectangle are equal and they bisect each other.
The diagonals of a rhombus are equal only if it's a square.
The diagonals of an isosceles trapezoid are also equal, but they do not bisect each other.
So, Figures 1, 2, and 4 are equal.