Question

If quadrilateral has three
acute angles, each measure 80°
then the measure of the fourth
angle is​

Answer 1

Answer:

1. 80+80+80+x=360
2. 240+x=360
3. x=120

Answer 2

Answer:

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Step-by-step explanation:

And since the sum of the 4 angles of the quadrilateral is equal to 360 degrees. So the 4th angle will be 120 degrees