Center point reference missing when modifying

[p_sydney_a_tse]

Does anyone have the same problem and/or know how to resolve it? Thank you! 

[paullimapa]

Are you referring to the center point of a Circle?

[p_sydney_a_tse]

@paullimapa Circle, polygon, any geometrical shapes.. also when I use the polyline tool to draw a rectangle, once I finish my first two lines, my third line wouldn't look for the start of my first line as a reference... I don't know what is happening but apparently the reference points are not functioning properly or could it be turned on/off?? 

I hope you understand what I'm referring to. I just started learning this week. Still a newbie so not so good at describing tools and functions. Many thanks! 

[paullimapa]

Are you referring to object snaps?

[p_sydney_a_tse]

@paullimapa You can see here - the end of the thrid line is not looking for the start of the first line (top horizontal line) on the horizontal axis 

[p_sydney_a_tse]

@paullimapa This is my current setting

[paullimapa · Accepted solution]

Check out this video on learning how to use object snap tracking 

[cadffm]

Hi,

"wouldn't look for the start of my first line as a reference"

You can do it by

Turn on your PERpendicular snap or your otrack [F11]

hover your cursor on the 1st poly point, wait for the green +, drag down your cursor..

[p_sydney_a_tse · Accepted solution]

I turned it off and on again and the green dot does appear! But once I finished the modification I had to turn it off and on again for the green dot to appear again. Strange.