Question

guys.....please answer quickly ​

Answer 1

Answer:

120°

Step-by-step explanation:

We know that 80+80+80 ( the three acute angles ) +x ( the fourth angle )=360 ( the total of all angles in a quadrilateral) . Now we need to solve for x:

Simplify

240+x=360

Subtract 240 from both sides:

x= 120

This means that the fourth angle is 120°

Hope this helped

- Brooklyn

( PS, please mark this as the brainliest answer! )

Answer 2

Answer:

120 degree

Step-by-step explanation:

Three acute angles of 80 degree=80 degree* 3=240 degree

We know that, Total sum of angles =360 degree

Therefore,fourth angle=360-240 degree

                                  =120 degree