Option A is correct. The number of degrees in angle ABO is 50 degrees
To get the angle ABO, we will use the theorem;
The angle at the vertex ABO is half that of its intercepted arc AB
Given the following:
angle at the arc AB = 100degrees
Required
Angle at the vertex ABO
According to the theorem;
[tex]\angle ABO =\frac{1}{2} arc AB\\\angle ABO = \frac{1}{2} (100)\\\angle ABO = 50^0[/tex]
Option A is correct. The number of degrees in angle ABO is 50 degrees
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