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    AdrianCavinder's Avatar
    AdrianCavinder Posts: 55, Reputation: 1
    Junior Member
    		  
    #1

    Mar 12, 2012, 09:38 PM
    AS Level: Finding Coordinates.
    Hi. I have a question that has stumped me. Any help would be appreciated.
    The origin O and a point B(p,q) are opposite vertices of the square OABC. Find the coordinates of the points A and C.
    I seem to be missing an ingredient to the answer. I can find the mid-point and the length of OB. I can also find the gradient of OB and of AC. But none of that really helps unless I can find a relationship between the points.
    The answer is [1/2(p-q), 1/2(p q)], [1/2(p q), 1/2(q-p)]. Any guidance would be appreciated.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #2

    Mar 19, 2012, 11:32 AM
    See answer here:
    https://www.askmehelpdesk.com/accoun...es-644049.html
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