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Topic: On a property of a line intersectiing two tangents of a cercle
Replies: 6   Last Post: Sep 29, 2009 1:33 AM

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Posts: 15
From: Ecole Nationale Polytechnique Dépt SF Lab. LRE
Registered: 7/9/09
On a property of a line intersectiing two tangents of a cercle
Posted: Jul 9, 2009 4:38 AM
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Let (C) a circle . A is a point outside (C). Let (D1), (D2) two tangents issued from A. (D1) is tangent at K and (D2) is tangent at L respectively. Let (D) a straight line passing through A, between (D1) and (D2). The meeting points with (C) are M and N respectively. Let (LP) the parralel at (D) issued from L, where P is the intersection with(C).
Prouve that (PK) intersect [MN] at his middle.

M. Ouadjaout
ENP,Dépt. SF, Lab. LRE

Message was edited by: OUADJAOUT

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