Eric Nicholas K's answer to Darren's Secondary 3 E Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Parts iv and v

Part iv can also be done by finding the midpoints of AC and BG, since the midpoints of both lines are the exact centre of the position of the square.

Part v can also be done by using the shoelace method of finding areas.