Question

120°,40°,20°,180° are the four angles of quadrilateral or not​

Answer 1

Answer:

Yes.

Step-by-step explanation:

Take 120°,40°,20°,180° and add them together.

You get 360° which is quadrilateral

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Answer 2

Answer:

Yes .

Step-by-step explanation:

we know that ; sum of all of quadrilateral= 360. 120+40+20+180=360