Question

2. Two adjacent angles of a quadrilateral are 90° each and the third angle is 140°. Find the fourth angle.

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Answer 1

Answer:

fouth angle is 80°

Step-by-step explanation:

we know that

sum of all angles of quadrilateral is =360

given to that...

two angles =90°each

3rd angle is 140°

now let the fourth angle be x

so 140+90+90+x= 360

280+x= 360

x= 360-280

x= 80