Answer:<em> 20 degrees</em>
Step-by-step explanation:
Find the 180 (degrees angle)= angle CD
180 degrees-110 degrees= 70 degrees
By using the OAT (opposite angle theorem), the opposite of the angle OD (you know what i mean) will be 70 degrees too. So, Angle BO is 70 degrees too. We know the right angle there is 90 degrees because of the square sign so, create another 180 degrees angle but subtract 160 degrees (70+90) from 180 degrees which is 20 degrees.
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