Posted by **IB student** on Sunday, December 2, 2012 at 1:50pm.

Find 2 points on the perpendicular bisector of line AB. Verify your results by showing each point is equidistant from A and B.

34.) A (0,0) B 90,4)

36.) A (3,3) B (3,-3)

38.) A (3,0) B (1,4)

- Geometry Honors -
**Steve**, Sunday, December 2, 2012 at 2:17pm
36 is easy, since AB is vertical.

34 and 38 are done the same way:

find the midpoint of AB

find the slope of AB; you want the negative reciprocal.

Now you have a point and a slope; the equation is easy

#38:

midpoint of AB is (2,2)

slope of AB is -2, so slope of ┴ is 1/2

y-2 = 1/2 (x-2)

now just pick any two values of x or y and solve for the other (y or x)

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