Question

give the answer plz chapter 8 quadrilateral std 9

Answer 1

❤ Here is ur ans.. ✌✌✌✌

Let the ratios be 'x'.-

So,The angles are =4x,5x,4x,5x.

Now,the angles of quad. is.-

=(4+5+4+5)x=360

=18x=360

x=20

So,the angles are,

=80,100,80 and 100 (by putting values of 'x')

The quadrilateral formed is parallelogram

Answer 2

Let all the angles be 4x, 5x, 4x, 5x
in a quadrilateral angle sum property = 360
/A+/B+/C+/D=360
4x+5x+4x+5x=360
18x=360
x=20
/A=80
/B=100
/C=80
/D=100
[angle is represented as /]