Question

Two consecutive angles of a parallelogram are in the ratio 1:3 then what will be the larger angle?

Answer 1

Let the angles be x & 3x

we know that the adjacent angles of parallelogram are supplementary

so we get equation

x + 3x = 180

4x = 180

x = 45

3x = 135

so larger angle of parallelogram is of measure 135 degree

Answer 2

Hope it will help you....