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Two poles of 3m height are 8m apart. If the top ends of the poles are tied to
the ground with ropes, halfway between the two poles, as shown below.
Write the congruence criterion used to show that Angle ABO is congruent to Angle CDO.
(ii) Is angle BAO=angle DCO? Justify your answer.
(iii) If m angleBAO=x°, find m angle DOC.




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