# How do you construct a tangent line from a point outside the circle?

## How do you construct a tangent line from a point outside the circle?

1) Draw a line connecting the point C to the center of the circle A. 2) Construct the perpendicular bisector of that line ﻿a)Place a point on the line ﻿b) Using the compass tool create a circle with a radius from that new point to A, centered at A.

What is 2nd step to construct the tangents to the point outside the circle?

Steps: Draw a line connecting the point to the center of the circle. Construct the perpendicular bisector of that line. Place the compass on the midpoint, adjust its length to reach the end point, and draw an arc across the circle. Where the arc crosses the circle will be the tangent points.

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### How many circles can be drawn through 2 points?

We can draw infinitely many circles passing through two given points. Starting from the two points as a diameter, we can draw a circle. As the circle is moving up it becomes a chord to the next circle with a bigger diameter. In such a way, we can draw an infinite number of circles passing through two points.

How do you construct two tangents to a circle?

Steps of Construction :

1. Draw a circle of radius 3.
2. Set a point P which is located at distance 6.
3. Draw a perpendicular bisector of OP which cuts OP at point Q.
4. Now, considering Q as a centre and equal radius (OQ=PQ).Draw a circle.
5. Both circles intersect at points A and B.
6. Join PA nd PB.

## How do you draw a point on a circle?

Point to Tangents on a Circle

1. Draw a line connecting the point to the center of the circle.
2. Construct the perpendicular bisector of that line.
3. Place the compass on the midpoint, adjust its length to reach the end point, and draw an arc across the circle.
4. Where the arc crosses the circle will be the tangent points.
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How to construct a tangent to a circle?

How to Construct a Tangent Line to a Circle 1 Setup of the problem. 2 You must first find the centre of the circle if it has not been given to you. 3 Extend the radius past the circle. 4 Erase any construction lines, if needed. Why is a tangent important? See More….

### What is the equation for a circle passing through two points?

Equation of a Circle Through Two Points and a Line Passing Through its Center. Consider the general equation a circle is given by. x 2 + y 2 + 2 g x + 2 f y + c = 0. If the given circle is passing through two points, say A ( x 1, y 1) and B ( x 2, y 2), then these points must satisfy the general equation of a circle.

How do you find the general equation of a circle?

If the given circle is passing through two points, say A ( x 1, y 1) and B ( x 2, y 2), then these points must satisfy the general equation of a circle. Now put these two points in the given equation of a circle, i.e.: Also, the given straight line a x + b y + c 1 = 0 passes through the center ( – g, – f) of the circle.

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## How to find the perpendicular bisector of a circle?

The two points (call them A and B) are both on the circle. Connect them and call the segment AB a chord of the circle. Construct the perpendicular bisector of chord AB.