Question

the opposite side of quadrilateral are parallel.if one angle of quadrilateral is 60 find other angle

Answer 1

Opposite sides parallel means opposite angles equal.

so, If one angle =60°

opposite angle=60°

two angles left are also equal. then 360-120=240°

240°÷2=120°

Other angles are of 120°

Answer 2

if one angle is 60 then diagonally opposite angle will also be 60

sum of all 4 angles = 360

so remaining 2 angles will be equal coz its a parallelogram and the diagonally opposite angles of a parallelogram is equal

so let other angle be x,

so 360 = x + x + 60 + 60

2x = 240

x = 120

so other two angle will be 120 and 120

all 4 angles are 60,60,120,120