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Ask iit jee aieee pet cbse icse state board experts Expert Question: 3 d geometry
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[Post New]6 May 2007 23:15:24 IST
    Subject: 3 d geometry
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Agentxnda (14)

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SHow that D(-1,4,-3) is the circumcentre of triangle ABC with vertices A(3,2,-5),B(-3,8,-5) and C(-3,2,1)
    
[Post New]6 May 2007 23:42:23 IST
    Subject: 3 d geometry
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amangem (797)

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watch carefully triangle ABC is an equilateral triangle with each side 6root 2 units .
so the centroid , circumcentre , and orthocenter coincide .
hence apply the formula of centroid to get the desired result
khud hi ko kar buland itna ki khuda bhi tujhse puche ...bol bande , teri raza kya hai
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[Post New]7 May 2007 00:33:56 IST
    Subject: Re:3 d geometry
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avinash.sharma (1189)

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Hello Agentxnda
 
amangem guided you correctly. Use the formula for centroid
 
[(x1+x2+x3)/3 , (y1+y2+y3)/3 ,(z1+z2+z3)/3 ] and you will get the desired result.
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[Post New]11 May 2007 23:16:00 IST
    Subject: Re:3 d geometry
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Agentxnda (14)

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thanku sir
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