n a parallelogram, PQRS, angle. P= (2x +10°)angle R= (3x – 20) .Find the value of x.​

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1. Answer:

   angle P +angle R = 90°

   (2x+10)+(3x-20)= 90

   5x-10=90

   5x=100

   x=100/5

   x=20°

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