Question

21.The angles of a quadrilateral are in the ratio of 3 : 7 : 1 : 9. The measure of smallest angle will be__​

Answer 1

Step-by-step explanation:

let the angles be x

3x,7x,1x,9x

4x=3+7+1+9

4x=20

x=20/4

x=5

now,

3*5=15, 7*5=35, 1*5=5, 9*5=45

ans=15,35,5,45

therefore,

the smallest angle =5