1.

समांतर चतुर्भुज का एक कोण 120 डिग्री है तो उसके बाकी तीनों कोणों का माप क्या होगा

Answer»

Step-by-step explanation:

GIVEN one angle of a parallelogram is 60 DEGREE. What will be the measure of the other three angles?

  • We need to find the measure of other angles.
  • So in a parallelogram ABCD, if angle A = 120 degree
  • So diagonally opposite angle is C. So angle A = angle C = 120 degree
  • Now the sum of adjacent angles of a parallelogram is 180 degree.
  • So angle A + angle B = 180 degree.
  • So  120 + B = 180
  • Or B = 180 – 120
  • So angle B = 60 degree
  • Now angle B = angle D (since opposite angles of a parallelogram.)
  •       So angle D = 60 degree
  • So we have A = 120 , B = 60, C = 120, D = 60

Reference link will be

brainly.in/question/7622864



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