Monday, April 6, 2009

Question on Calculating Mid Point and Distance between the mid points in a Geometrical Figure

Topic : Mid Point and Distance Between Mid Points
Let M and N be the mid points of TR and TV
We use mid point formula to find coordinates of M and N ,
From figure x1 = 1, y1 = -4 and x2 = 9 , y2 = 8
Substitute in mid point formula,
M = (1+9/2, -4+8/2) = (5,2)
Similarly coordinates of N = (9+13/2 , 8+2/2) = (11,5)
Now we use distance formula to find MN
M = (5,2) and N =(11, 5)
x1 = 5 and y1 = 2
x2 = 11 and y2 = 5
substituting the values in distance formula we get
MN = √(11 - 5)² + (5 - 2)²
= √4² + 3²
= √45
= 3√5

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