Answer:
360-270=x
x=90 degrees
Explanation:
There are two ways i know of how you can do this
The first way:
Ok so lets add up all the angles we know
90+90+90=270
Now we subtract that from 360
360-270=90
And there we have it the measure of angle x is 90 degrees
The second way:
Ok lets name all the angles we know. Hypothetically we only know that one angle is 90.
measure of angle one is 90 degrees
So now we subtract that from 360
360-90=270
Now we divide that by three because there are only 4 angles and we know the measure of one of the angles
270/3=90
And there we have it the measure of angle x is 90 degrees