In circle O, which segment is a chord?

Question  options:


A - OH-->


B - SD-->


C - OR-->


D - RC-->

ForgottenMoon  Jun 4, 2018

A chord of a circle is a straight line segment whose endpoints both lie on the circle.


More generally, a chord is a line segment joining two points on any curve, for instance an ellipse.


A chord that passes through a circle's center point is the circle's diameter.


Every diameter is a chord, but not every chord is a diameter.


The first choice, OH is not a chord, it is the radius of the circle. 


SD is also not a chord, it is a tangent line to the circle. 


OR is too, not a chord, it is also a radius. 


RC is a chord, since a diameter is a chord. 



GYanggg  Jun 4, 2018
edited by GYanggg  Jun 4, 2018

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