2. ABCD is a rhombus in which ∠A = 60°. Find the ratio AC : BD.


3. In the adjoining figure, AD = BC, P, Q, R and S are mid-points of AB, BD, CD and AC respectively. Prove that PQRS is a rhombus.

Kindly refer the same  link for your query 2
 https://www.meritnation.com/ask-answer/question/if-one-angle-of-rhombus-is-equal-to-60-find-tge-ratio-of/math/8777095
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