Question

In a parallelogram ABCD,if angle A =(3x-15) and angle D=(2x+5),then find the value of x

Answer 1

Answer:

Given,

Angle A=(3x-15)

And,angle D=(2x+5)

To find,

Value of x

Solution:

here, angle A is equal to angle D because opposite angles of ||gm are equal.

Therefore,

Angle A =Angle D

3x-15=2x+5

3x-2x=5+15

X=20

Answer 2

Answer:

angle A + angle D = 180°.(co-interior angle)

(3x-15) + (2x+5) = 180°

= 5x -10 = 180°

= 5x = 180+10

= 5x = 190°

= x = 190/5 =38°

The value of x is 38°

hope this helps!