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What is a tangent intersecting the segment joining the centers of the two circles?
They are the common tangents to the circles.
How many common external tangent can be drawn to two concentric circles?
If the circles have the same radius then an infinite number, and if they do not, then none.
What is a common tangent?
A common tangent is a line which is tangent to two (or more) curves.
Is tangent and a circle can have exactly one point in common?
From the definition of tangent, it can ONLY have one point in common called the tangent point.
What is common of tangent?
Common Tangents Some common tangents of two circles can be drawn.You can find that the number of them varies by the condition of the distance and radii of two circles.Using the applet of Common Tangents, try to explore this relation to the common tangents. Using the applet of Common Tangents In this applet you can explore the number of common tangents, dragging to change the radii or to move the circles.The button of@"Init"@is for replacing the figure in the initial state.If you click the button of@"Auto",@the circles are moving automatically, and then you can enjoy their performance.
