Question

two adjacent angles of a quadrilateral are 90 degree each and the third is 140 degree. find the fourth angle?​

Answer 1

Answer:

sum of all angles=360

90+90++140+x=360

x=40

Answer 2

Answer:

Step-by-step explanation:

Sum of all interior angles of a quadrilateral=360°

So,

A+B+C+D=360°

90°+90°+140°+X=360

X=(360-320)°=40°