How to combat the bothersome incircle construction inaccuracy? - Page 2 - uses cookies. By continuing to browse this site you are agreeing to our use of cookies. Click here to find out more x
Post Reply  
Thread Tools Search this Thread
26-05-2012, 14:46   #16
Registered User
Join Date: May 2008
Location: As far away as possible
Posts: 762
Originally Posted by m4r0s View Post
assume everyone knows it...but you've to draw a 90 degree line to one of the sides from the incentre, works every time for me

This is the step that will help accuracy. Once you've found the incentre point, draw a perpendicular line (using the 90 degree edge of your set square) from one side of the triangle to the incentre point. This line is now the radius if your incircle so set your compass to the length of this line, then swing that baby around
boogle is offline  
28-05-2012, 17:17   #17
Join Date: Feb 2012
Posts: 787
There ya go reznov. A perfect incircle
Attached Images
File Type: jpg IMG_0260[1].JPG (241.0 KB, 45 views)
JeaicMaG is offline  
Thanks from:
28-05-2012, 17:25   #18
J'ai une araignée au plafond
Canard's Avatar
Join Date: Dec 2008
Posts: 8,114
It...its beautiful.
Canard is offline  
29-05-2012, 00:11   #19
Closed Account
Join Date: Oct 2011
Posts: 4,807
Just make sure your pencil tip is as blunt as possible, therefore you can't but get the circle to touch all three sides!
Togepi is offline  
29-05-2012, 10:56   #20
Registered User
Join Date: Aug 2011
Location: Kildare
Posts: 153
Im did tech graph for JC and was pretty good at it, and they were pretty harsh on docking marks for inaccuracies like those.
So I found a few ways to make all these constructions pretty god dam perfect

Firstly, when you're bisecting an angle or line, set the length of your compas really long (as in go way outside the triangle). Anyone doing physics, back me up on this one, reduce percentage error FTW!

Also, sharpen your pencil like crazy for constructions, then snap the top off with you're fingernail so as when you draw the circle, its wider and more likely to touch everywhere you want it to

Last point, if you wanna go hardcore, get a real compass, as in this:

They really help and especially since were allowed plot and measure our co-ordinate geometry questions, being able to measure distances accurately is going to be very important
jos360 is offline  
Thanks from:
Post Reply

Quick Reply
Remove Text Formatting

Insert Image
Wrap [QUOTE] tags around selected text
Decrease Size
Increase Size
Please sign up or log in to join the discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Share Tweet