math
posted by stacey .
8. When constructing a perpendicular bisector, why must the compass opening be greater 1/2 than the length of the segment?

http://www.sonoma.edu/users/w/wilsonst/courses/math_150/cs/PerpBisect.html

i don't get it

can you explain it to me

I can't explain it any better than that web site. What is it that you don't understand?
Or try this site.
http://www.mathsisfun.com/geometry/constructlinebisect.html 
i don't get why the compass has to be open more than 1/2 the length segment

Get a compass and try it.
How else are you going to get arcs above and below the line? 
so i would answers it like....
the reason that the compass opening has to be greater than 1/2 of the segment is so it can make arcs. 
That's a good start. Continue 

i don't know how to finish it

Where do the arcs have to cross?

in the middle

Right.

so now it would be
the reason that the compass opening has to be greater than 1/2 of the segment is so it can make arcs. and the arcs would have to cross in the middle so that when go to draw the line it would be straight. 
Yay! You're right!

thank you

You're welcome.
Respond to this Question
Similar Questions

math
A perpendicular bisector is a segment which is perpendicular to another segment, and specifically goes through the midpoint of the segment. Find the equation of the perpendicular bisector of in slope intercept form, given A(3,6) and … 
geometry
Wendy drew line segment LM. She used a compass and straightedge and constructed a bisector on segment LM that crosses it at O. Which other construction uses the same steps as the ones Wendy took? 
geometry
How is constructing a perpendicular bisector similar to constructing an angle bisector? 
geometry
An architect plans to make a drawing of the room of a house. The segment LM represents the floor of the room. He wants to construct a line passing through Q and perpendicular to side LM to represent a wall of the room. He uses a straightedge … 
geometry
When constructing a perpendicular bisector, why must the compass opening be greater than one half the length of the segment 
Geometry
How would you write the name of a segment differently than the name of a line? 
Math
1.The midpoint of SM is (5 11) one endpoint is S (3,5). What are the coordinates of endpoint M? 
Math HELP PLZZ!!
1. To ________________ means to cut into two congruent parts. A: intersect B: bisect •• C: construct D: divide 2. Which tool is not needed to construct a perpendicular bisector? 
Geometry
1) Explain how you can use a straightedge and a compass to construct an angle that is both congruent and adjacent to a given angle. 2) When constructing a perpendicular bisector, why must the compass opening be greater than the 1/2 … 
geometry
Why must the compass opening be greater than 1/2 of the segment when construction a perpedicular bisector