Midpoint Formula

Key Questions

  • Answer:

    The coordinate of Midpoint :((x_1+x_2)/2, (y_1+y_2)/2):(x1+x22,y1+y22)

    Explanation:

    Midpoint Formula :

    "If "A(x_1,y_1) and B(x_2,y_2) " are the two point on the line ,"If A(x1,y1)andB(x2,y2) are the two point on the line ,

    "then midpoint M of the line segment " bar(AB) " is :"then midpoint M of the line segment ¯¯¯¯¯¯AB is :

    M((x_1+x_2)/2, (y_1+y_2)/2)M(x1+x22,y1+y22)

    Please see the image.

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  • Answer:

    You find the midpoint in exactly the same way with integers and fractions.

    Explanation:

    You find the midpoint in exactly the same way with integers and fractions, no matter whether they are common fractions, improper fractions or decimal fractions.

    Add the two xx- values together and divide by 22

    Add the two yy-values together and divide by 22

    This will give a point, M(x,y)M(x,y)

  • If you know one endpoint (x_1,y_1)(x1,y1) and the midpoint (a,b)(a,b), but you do not know the other endpoint (x_2,y_2)(x2,y2), then by rewriting the midpoint formula:

    {(a={x_1+x_2}/2 Rightarrow 2a=x_1+x_2 Rightarrow x_2=2a-x_1),(b={y_1+y_2}/2 Rightarrow 2b=y_1+y_2 Rightarrowy_2=2b-y_1):}

    So, the unknown endpoint can be found by

    (x_2,y_2)=(2a-x_1,2b-y_1)


    I hope that this was helpful.

  • The midpoint M of the points (x_1,y_1) and (x_2,y_2) is found by

    M=({x_1+x_2}/2,{y_1+y_2}/2).

    As you can see above, the each coordinate of M is the average of the corresponding coordinates of the endpoints.


    I hope that this was helpful.

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