Solving Unknown Angles in Intersecting Lines
Solving Unknown Angles in Intersecting Lines
TGM Original
The diagram shows two straight lines, \(AB\) and \(CD\), intersecting at \(O\).
\(\angle DOB=39{}^\circ \) and \(\angle COE=81{}^\circ \).
Find
- \(\angle AOC\),
- the value of \(x\),
stating your reason clearly.
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Answer:(a)\(\angle AOC=39{}^\circ \) (vertically opposite angles) (b) \(x=20\)
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