## lilyrose33 2 years ago my geometry book says: Construct a square with sides of length MN. How do I do it? Do I use my compass?

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1. lilyrose33

my geometry book says: Construct a square with sides of length MN. How do I do it? Do I use my compass?

2. OpenSessame

|dw:1377663865625:dw|

3. lilyrose33

is it that easy?

4. OpenSessame

I believe so...

5. Peter14

|dw:1377663929553:dw| start with the solid line, draw the circle and the dashed line then you have a straight line with length 2MN. Find the perpendicular bisector.

6. OpenSessame

Okay NM that guy knows what hes doing!

7. Peter14

|dw:1377664027917:dw| continue the perpendicular bisector out to the edge of the first circle you drew so it has a length of MN

8. Peter14

do you see what to do next?

9. lilyrose33

10. Peter14

tell me what you would do next, then I'll tell you if you're right

11. lilyrose33

do you have to construct another circle to make an intersection to make a point? I felt like that made no sense...^_^

12. Peter14

in the first drawing I did or the second drawing I did?

13. lilyrose33

um the second?

14. Peter14

to find the perpendicular bisector you will have to construct two more arcs, but the circle you continue the line to is already there.

15. lilyrose33

thats what i was thinking. could you show me how to do that?

16. Peter14

how to construct a perpendicular bisector?

17. lilyrose33

18. Peter14

http://www.mathopenref.com/constperplinepoint.html constructing a perpendicular bisector of a line through a point on the line

19. Peter14

do you understand that?

20. Peter14

@lilyrose33

21. lilyrose33

yes i did it thank you for all your help

22. lilyrose33

@Peter14

23. Peter14

you're welcome

mad u cam make a square sing compass but u will hv to be effiecient to making angles of 90 digree

25. Peter14

I'm sorry @khurramshahzad, I don't understand what you just said

oh man i just said in short words what ever u explained above....... taking a just said to make 90 digree angle with efficiancy .. nothing more .... he said compass