Question

please give my answer fast please​

Answer 1

Answer:

2x+3x+5x=180

10x=180

x=18

angle d =4x=72

angle c=5x=90

angle a=90

angle b=6x=108

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Answer 2

Answer:

in ∆ bdc

sum of all angles = 180°

b+d+c = 180

3x+2x+5x= 180

10x = 180

x= 180/10

x= 18°

so angles C = 5 x = 5×18 = 90°

in a parallelogram opposite angles are equal

therefore C = angle A = 90°

in a parallelogram sum of adjacent angles = 180

so

D+ C = 180

D + 90=180

D = 180-90=90°

in a ||gm opp angles are equal

so.

D = B = 90°

therefore

A= B = C = D = 90°

by this we also found that since all angles are of 90° in a parallelogram .....therefore it is a rectangle