Three or much more lines in a airplane passing v the same allude are concurrent lines.Whenever 2 nonparallel lines fulfill each various other they type a suggest of intersection. Once a third line likewise passes with the allude of intersection do by the very first two lines then these three lines are claimed to be concurrent lines. The point of intersection of all these currently is referred to as the 'Point of Concurrency'. Because that example, we deserve to see that threealtitudes that are attracted on a triangle intersect at a point, which is referred to as 'Orthocenter'. It is to be listed that only nonparallel lines have a suggest of concurrence since they prolong indefinitely and meet in ~ a point.

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1. | Concurrent lines Definition |

2. | Concurrent currently of a Triangle |

3. | Solved instances on Concurrent Lines |

4. | Practice Questionson Concurrent Lines |

5. | FAQs top top Concurrent Lines |

## Concurrent lines Definition

Concurrent currently are identified as the collection of currently that crossing at a common point. 3 or much more lines should intersect in ~ a point to qualify as concurrent lines. Just lines deserve to be concurrent, rays and also line segments deserve to not be concurrent since they perform not necessarily accomplish at a point all the time. There have the right to be more than 2 lines the pass with a point. A couple of examples space the diameters the a circle are concurrent at the center of the circle. In quadrilaterals, the heat segments authorized midpoints of the opposite sides, and the diagonals are concurrent.

## How to find If Lines space Concurrent?

To uncover if three lines room concurrent or not, there space two methods. Let us comment on both the them.

**Method 1:**

Let us considerthree lines,Line 1 = \(a_1x\) + \(b_1y\) + \(c_1z\) = 0 andLine 2= \(a_2x\) + \(b_2y\) + \(c_2z\) = 0 andLine 3= \(a_3x\) + \(b_3y\) + \(c_3z\) = 0.To finish if the over three lines are concurrent, the following condition shown listed below as a determinant need to be evaluate to 0.

One other method to inspect if the lines intersect each other is together follows.

**Method 2:**To inspect if three lines space concurrent, we first find the point of intersection of two lines and also then inspect to watch if the third line passes with the intersection point. This will ensure that all 3 lines space concurrent. Let us know this much better with an example. The equations of any kind of three lines room as follows.4x - 2y - 4= 0 ----- (1)y = x + 2 ----- (2)2x + 3y = 26 ----- (3)**Step 1: **To discover the point of intersection of line 1 and also line 2, settle the equations (1) and (2) by substitution method.Substituting the value of 'y' indigenous equation (2) in equation (1) we get,4x - 2 (x + 2) - 4 = 04x - 2x - 4 - 4 = 02x - 8 = 0x = 8/2x = 4.Substituting the value of 'x = 4' in equation (2), we obtain the value of 'y'.y = x + 2----- (2)y = 4 + 2y = 6Therefore, heat 1 and also line 2 crossing at a suggest (4,6).**Step 2:**Substitute the allude of intersection of the very first two present in the equation that the 3rd line.Equation the the 3rd line is 2x + 3y = 26 ----- (3)Substituting the values of (4,6) in equation (3), us get,2(4) + 3(6) = 268 + 18 = 2626 = 26Therefore, the suggest of intersection goes best with the third line equation, which means the three lines intersect each other and also are concurrent lines.

A triangleis a two-dimensional form that has actually 3 sides and 3 angles. Concurrent lines can be viewed inside triangles once some special kind of line segments are attracted inside them.Be that any form of triangle, we can locate four different points that concurrence.They are,

**Incenter:** The suggest of intersection of 3 angularbisectors within a triangle is referred to as the incenterof a triangle.**Circumcenter:** The suggest of intersection of three perpendicular bisectors inside a triangle is dubbed the circumcenterof a triangle.**Centroid:**The suggest of intersection of three medians of atriangle is called the centroid that a triangle**Orthocenter:**The suggest of intersection of 3 altitudesof atriangle is called the orthocenter that a triangle.

### Topics concerned Concurrent Lines

Check the end some amazing topics concerned concurrent lines.

**Example 1: Verify even if it is the adhering to lines space concurrent or not. The heat equations are, x +2y - 4= 0, x- y - 1= 0, 4x + 5y -13 = 0.Solution:**To inspect if three lines are concurrent, the following problem should be satisfied.

Comparing the given three heat equations to \(a_1x\) + \(b_1y\) + \(c_1z\) = 0, \(a_2x\) + \(b_2y\) + \(c_2z\) = 0 and also \(a_3x\) + \(b_3y\) + \(c_3z\) = 0, permit us discover the worths of \(a_1\), \(b_1\),\(c_1\) , \(a_2\), \(b_2\),\(c_2\) , \(a_3\), \(b_3\),\(c_3\)

\(a_1\)= 1 \(b_1\)= 2 \(c_1\)= -4\(a_2\)= 1 \(b_2\) = -1\(c_2\) = -1\(a_3\) = 4\(b_3\) = 5\(c_3\) = -13Arranging them in the determinants form, we get,

On addressing this, we get,

= 1(13 + 5) - 2(-13 + 4) - 4(5 + 4)= 18 + 18 - 36= 36 - 36= 0

The above condition holds good for the 3 lines. Therefore, the three lines space concurrent.

**Example 2: Verify whether the third line passes through the point of intersection that the very first two lines. The line equation that the three lines are3x + 2y -15= 0, x-2y = -3 , 4x + 5y -27= 0.See more: How Many Pounds Is A Peck Of Apples ? How Much Is A Peck Of Apples**

**Solution:**

To inspect whether the third line passes v the first two lines, we an initial solve the first two equations.3x + 2y -15= 0 ------- (1)x-2y + 3 = 0------- (2)4x + 5y -27= 0------- (3)From equation (2) us can get the worth of 2y.x - 2y + 3 = 0Therefore, -2y = -3 -x 2y = 3 + xSubstituting the worth of 2y in equation (1) we get,

3x + 3 + x - 15 = 04x + 3 - 15 = 04x - 12 = 0x = 3Substituting the value of 'x' in equation (2), we get,3 - 2y + 3 = 06 - 2y = 06 = 2yy = 6/2y = 3.Now, we substitute the values of 'x' and also 'y' in equation (3) to examine if that passes with this point and verify the they room concurrent lines.4x + 5y -27= 0 ------- (3)4(3) + 5(3) - 27 = 012+15 - 27 = 027 - 27 = 0Therefore, the three lines are concurrent.