Question

the angels of quadrilaterals are in the ratio 1:3:7:9. find the measure of each angle. is the figure a trapezium?​

Answer 1

Answer:

let angles be 1x,3x,7x and 9x

now,sum of all angles of trapezium 360 degree

then,

1x+3x+7x+9x=360

20x=360

x=18 degree

1st angle=1*18=18 degree

2nd angle=3*18=54 degree

3rd angle=7*18=126 degree

4th angle=9*18=162 degree