Question

EXERCISE 8.1
1. The angles of quadrilateral are in the ratio 3:5:9:13. Find all the angles of the
quadrilateral.

Answer 1

Answer:

The angles of a quadrilateral are 3x, 5x, 9x and 13x respectively.

We know, sum of all interior angles of a quadrilateral = 360°

Therefore, 3x + 5x + 9x + 13x = 360° 30x = 360° or x = 12° Hence, angles measures are

3x = 3(12) = 36°

5x = 5(12) = 60°

9x = 9(12) = 108°

13x = 13(12) = 156°

Answer 2

Answer:

sum of all angles of quadrilateral = 360°

3x + 5x + 9x + 13x = 360°

30x = 360°

x. = 360/30 = 12°

_________________________

so, angles are : 3x = 36° , 5x = 60° ,

9x = 108 , 13x = 156° answer..

_____________________

hope this helps u... thnk u and have a great day ahead ❤️