Respuesta :

LamZhaoWei
x = 90-22
x = 68
..............
weibel005
So since you know that the upper right angle is 90 degrees (that's what the little box means) you know that it's opposite angle has he same measurement.

The angle opposite of the box is 22+x degrees.

We now have the equation 90=22+x

Just solve for x