Question

The angles of a quadrilateral are x, x+10, x+70, x+80.Find x

Answer 1

Answer:

x=68

Step-by-step explanation:Hi ,

sum of the angles in a quadrilateral = 360

x + ( x - 10 ) + ( x + 30 ) + 2x = 360

x + x + x + 2x -10 +30 = 360

5x + 20 = 360  

5x = 360 - 20

5x = 340

x = 340 / 5

x = 68