ABCD is a parallelogram the ratio of (a and (b of this parallelogram is 5:4 find measure of (b​

1 thought on “ABCD is a parallelogram the ratio of (a and (b of this parallelogram is 5:4 find measure of (b​”

1. Answer:

   In Paralellogram ABCD adjacent angle are 180°

   i.e. /_A + /_B = 180° ___(1)

   Given :- /_ A 5

   ____ =. __

   /_ B. 4

   i.e. 4/_A = 5/_B

   i.s. /_ A= 5/_B/4

   Putting this in (1), we get

   5/_B / 4 + /_B = 180°

   i.e. 5/_B + 4/_B = 720°

   i.e. 9/_B =720°

   i.e. /_ B = 720/9

   i.e. /_B = 80°

   Therefore angle B is 80 degree

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