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Infinite lines because a circle has infinite lines of symmetry.

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Q: How many lines can be drawn through a given point on a circle that is tangent to the circle?
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How do you construct a line tangent through a circle through a point outside the circle?

The tangent line only touches the outside of a circle at one given point. So an outside line perpendicular to the circle's diameter at 90 degrees should do.

What is Tangent in geometry?

A tangent is a straight line that touches the circumference of a circle at a given point

If a circle is tangent to each side of a given polygon then?

the circle is inscribed in the polygon :]

In circle A below the radius is 3 and BC is tangent to the circle. Find BC?

Not enough information has been given to find the tangent BC but it will be perpendicular or at right angles to the radius of the circle.

Does a trigonometry tangent relate to a circle's tangent?

A circle's tangent is exactly the same as a triangle's tangent. If you look at a circle, you can make the radius the hypotenuse. Then make a vertical line from the point, and a horizontal line from the center. If you look, you have a triangle made inside the circle. This is why angles can be measured in radians, a unit that is derived from the circumference of a circle.-------------------------------------------------------------------------------------------By doing a little calculus, we find that the slope of the equation of a circle-the slope of the tangent line-is given by the tangent of an angle.AnswerEverything written above is correct, but doesn't have anything to do with tangents (in the circle sense of the word). Suppose you're given an angle theta. Draw a circle together with two radii, one horizontal and the other at an angle theta from the first one. (So far, this is the same as above.) Now draw the tangent to the circle at X, the point where the non-horizontal radius meets the circumference. Let Y be the point where this tangent meets the horizontal line through the centre. Then, assuming the radius is 1, tan(theta) is the distance XY, which is the length of part of the tangent.

Prove that the perpendicular at the point of contact to the tangent to a circle passes through the center?

Draw a circle with centre O. draw a tangent PR touching circle at P. Draw QP perpendicular to RP at point P, Qp lies in the circle. Now, angle OPR = 90 degree (radius perpendicular to tangent) also angle QPR = 90 degree (given) Therefore angle OPR = angle QPR. This is possible only when O lies on QP. Hence, it is prooved that the perpendicular at the point of contact to the tangent to a circle passes through the centre. Answer By- Rajendra Meena, Jaipur, India. email:

A line that is tangent to two circles?

... touches each circle in exactly one point on each circle. given any two circles where none is entirely inside or inside and tangent to the other, there are at most four straight lines that are tangent to both circles.

What is the locus of the centers of circles that are tangent to a given circle O at a given point A on circle O?

Join the centre of the circle O and the point A .Extend it to both sides to form a line.This is the required locus

In maths what is a tangent and what is a chord?

Tangent:In geometry, the tangent line (or simply the tangent) is a curve at a given point and is the straight line that "just touches" the curve at that point. As it passes through the point where the tangent line and the curve meet the tangent line is "going in the same direction" as the curve, and in this sense it is the best straight-line approximation to the curve at that point.Chord:A chord of a curve is a geometric line segment whose endpoints both lie on the outside of the circle.

If two chords of a given circle are congruent then they must?

be equidistant from the center of the circle. APEX!

What is the name given to the line drawn from the centre of the circle to its outside edge?

i yutr6t 87c

What name is given to the line that traces the edge of a circle?

The curved line that traces the boundary or perimeter of a circle is called the circumference. A straight line that touches the circle at just one point is called a tangent. See the related link, 'The Parts of the Circle', below this answer.