Answer:

first we find the angles

let the

angles be " 7x"" 9x" "3x" "5x"

7x+9x+3x+5x=360(angle sum property of a triangle)

24x=360

x=360/24

x=15

Step-by-step explanation:

Let the angles be 7x°, 9x°, 3x°, 5x° respectively

sum of all angles of a quadrilateral is 360°

accoding to the problem,

7x°+9x°+3x°+5x°= 360°

or, 24x°= 360°

or, x= 360/24

therefore, x= 15

the angles are 105°, 135°, 45°, 75°.