CBSE 2025 · Region 3 · Set 1 · Q20 · 1 mark
Assertion (A) : If two tangents are drawn to a circle from an external point, then they subtend equal angles at the centre of the circle.
Reason (R) : A parallelogram circumscribing a circle is a rhombus.
Official answer
From CBSE’s own marking scheme for this paper.
(B)
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A) .
CirclesTangent Properties and ProofsUnderstandassertion_reasonmedium
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CBSE Class 10 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.