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mmrproblem
Joined: 05 Nov 2004Posts: 15
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Posted: Tue Nov 23, 2004 5:45 am Post subject: a construction
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I have a problem about quadrilateral.I would be very happy if you help me.Here my problem:
ABCD be a quadrilateral that has an inscribed circle.If BC=14,AD=10 and r=2(inscribed circle radius) find the area of ABCD.This is a very easy question but is datas that given sufficient to construct a quadrilateral like this?Is it a complete question?I need your help please.Thanks
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Raceleader
Joined: 18 Jan 2004Posts: 10
Location: 香港
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Posted: Tue Nov 23, 2004 9:32 am Post subject:
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You try to construct the radius to the touching points, then you can find 8 triangles, and you can find their area. The information is enough.
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