Identify which diagram shows the radius of a circle:
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Identify which diagram shows the radius of a circle:
Remember that a radius is a line segment connecting the center of the circle to a point that lies on the circle itself.
In drawing A, the line doesn't touch any point on the circle itself.
In drawing B, the line doesn't pass through the center of the circle.
We can see that in drawing C, the line that extends from the center of the circle is indeed connected to a point on the circle itself.
Where does a point need to be so that its distance from the center of the circle is the shortest?
The center is usually marked with a dot or small circle. It's the point that's exactly the same distance from every point on the circle's edge.
A radius goes from center to edge, while a diameter goes all the way across the circle through the center. The diameter is always twice as long as the radius!
Yes! A circle has infinitely many radii because you can draw a line from the center to any point on the circumference. They're all the same length though.
If a line starts at the center but extends beyond the circle, the radius is only the part from center to where it first touches the edge. The rest doesn't count as radius.
No! A chord connects any two points on the circle's edge, while a radius must start at the center. Only diameters are chords that pass through the center.
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