ABCD is a parallelogram in which P and Q are mid -points of opposite sides AB and CD . If AQ intersects DP atS and BQ intersects CP at R ,show that APCQ is a parallelogram.
In class 12 mathematics NCERT chapter 6 misc question-6 you started with [0,2π] but after some time came to (0,2π) why there is a change from closed interval to open interval.
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