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Unformatted text preview: O . Find the values of a and b . 3. Given that AOB is a straight line. Find the value of a . 4. Given that AB , CD , EF intersect at O . Find ∠ AOC . 5. Given that ∠ DOC = 110 ° . Is it true that OB is the angle bisector of ∠ AOC ? Explain with steps....
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- Winter '11
- EF intersect