Don't Overlook the Obvious
11-27-2018, 01:13 PM
Post: #1
 SlideRule Senior Member Posts: 1,386 Joined: Dec 2013
Don't Overlook the Obvious
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The point P is any point on the circle with center O. Perpendicular lines are drawn from P to perpendicular diameters, AB and CD, meeting them at points F and E, respectively. If the diameter of the circle is 8, what is the length of EF?

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SlideRule

ps: the subject line is a hint
11-27-2018, 01:46 PM
Post: #2
 Albert Chan Senior Member Posts: 2,354 Joined: Jul 2018
RE: Don't Overlook the Obvious
EF = OP = 8/2 = 4
11-27-2018, 01:50 PM (This post was last modified: 11-27-2018 02:52 PM by SlideRule.)
Post: #3
 SlideRule Senior Member Posts: 1,386 Joined: Dec 2013
RE: Don't Overlook the Obvious
(11-27-2018 01:46 PM)Albert Chan Wrote:  EF = OP = 8/2 = 4

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[attachment=6640]
extract from Math Wonders to Inspire Teachers and Students

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