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OTET 2025 Paper 1 Mathematics Solution (Question No. 99) | Geometry - Quadrilaterals.

📝 Question / ପ୍ରଶ୍ନ: Which of the following conditions is required for a quadrilateral to be a rhombus? ନିମ୍ନସ୍ଥ କେଉଁ ସର୍ଭରେ ଏକ ଚତୁର୍ଭୁଜ ରମ୍ୱସ ହେବ ?

Options: (A) Two diagonals are equal (This is for a Rectangle).
(B) Two diagonals are perpendicular (This can be a Kite).
(C) Two sides are parallel (This is for a Trapezium).
(D) All sides are equal (This is the Definition of a Rhombus).

💡 Solution & Explanation:

Many students get confused between Option (B) and (D).

While it is true that the diagonals of a rhombus are perpendicular, a Kite also has perpendicular diagonals but is not a rhombus.

The defining characteristic that makes a quadrilateral a Rhombus is that all four sides must be equal in length.

✅ Correct Answer: (D) All sides are equal (ସମସ୍ତ ବାହୁର ଦୈର୍ଘ୍ୟ ସମାନ ହେଲେ)

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