Question

Find the size of the abgle of a parallelogram if one angle is 20 degree less than twice the smallest angle.

Answer 1

Answer:

let the smallest angle be x°

then the other angles will be (2x-20)°

we know that the adjacent angles of llgm are

supplementary

therefore,

x+2x-20=180

3x=180+20

3x=200

x=200/3

x=66.6°

other angle =2×66.6.-20=113.3°