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In circle O, which segment is a chord?

Question  options:

 

A - OH-->

 

B - SD-->

 

C - OR-->

 

D - RC-->

 Jun 4, 2018
 #1
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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. 

 

:) 

 Jun 4, 2018
edited by GYanggg  Jun 4, 2018

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