# How do we find the equation of perpendicular bisector of a segment whose end points are #(-2,-1)# and #(-18,-5)#?

Equation of perpendicula bisector is

A perpendicular bisector of a line segment whose endpoints are given, is locus of a point, which moves so that its distance from the two points is always equal.

Hence equation of line is

graph{(4x+y+43)((x+2)^2+(y+1)^2-0.1)((x+18)^2+(y+5)^2-0.1)(x-4y-2)=0 [-29.66, 10.34, -11.84, 8.16]}

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- What is the perimeter of a triangle with corners at #(3 ,0 )#, #(5 ,2 )#, and #(1 ,4 )#?
- Circle A has a center at #(1 ,3 )# and an area of #16 pi#. Circle B has a center at #(2 ,7 )# and an area of #75 pi#. Do the circles overlap?
- What is the perimeter of a triangle with corners at #(7 ,6 )#, #(4 ,5 )#, and #(3 ,1 )#?
- What is the perimeter of a triangle with corners at #(9 ,2 )#, #(2 ,3 )#, and #(4 ,1 )#?
- Circle A has a center at #(5 ,4 )# and a radius of #4 #. Circle B has a center at #(6 ,-8 )# and a radius of #2 #. Do the circles overlap? If not, what is the smallest distance between them?

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