Question

If the three angles of a quadrilateral are 80°, 90° and 100°, then the fourth angle is____​

Answer 1

Answer:

90° is the correct Answer.

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Answer 2

Answer:

90

Step-by-step explanation:

All angles of a quadrilateral add up to 360

Since we have 3 angles already given,

The 4th angle will be -

360 - ( 80 + 90 + 100)

360-270 = 90

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