Question

in a ||gm ABCD angleA:angleB=2:3 .find angle D ​

Answer 1

Answer:

Angle D = 108°

Explanation:

In ||gm ABCD,

Given : Angle A: Angle B= 2:3

To Find : Angle D

Solu. - Let Angle A = 2x & Angle B = 3x

So, A+B = 180° ( Sum of adj. side of a || gm is equal to 180° )

2x+3x = 180°

5x= 180°

x = 36°

Value of Angle A = 2x = 2*36 = 72°

And, B = 3x = 3*36° = 108°

Now, Angle B = Angle D ( Opp. angles of || gm are equal)

So, Angle D = 108°

___Hope it helped you___

Answer 2

Answer:

solution:-

let the angle be 2x and 3x

<A+<b=180 degree      [co interior angle]

therefore   =  2x+3x=180

=  5x=180

=  x=180/5

=  x=36

therefore   <A = 2x= 2 * 36 =72

                   <B = 3x= 3* 36 =108

                  <A=<C =72   {opp angle of llgm}

                    <B=<D=108 {opp angle of llgm}

Explanation:

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