connecting lines and circles

[AntonyWright]

Hi,

Im having a little issue with connecting lines and circles but not sure how to shorten the question to do a search on here. Let me explain. I have 2 concentric circles (the two circles form the walls of a round tower wall) which have 2 lines (representing a wall) passing through them. I want to join the circles from the circumference to the lines, but each time I try to do it the line seems to default to the centre of the circles and to the endpoints of the lines which is not what I want. The eventual aim will be to remove a section of the circles and the lines where the new line connects to them to form an opening in the walls.

Ive tried right click and selecting tangent on the circles but I cant figure out what to do on the lines and it constantly defaults to the end of the line not to where I want to intersect the lines. I hope someone understands what I mean and can point me in the right direction. Thanks.

[ReMark]

Post an image. It almost sounds as though either the circles or the straight wall need to be trimmed.

[ReMark]

Is this the situation you are describing?

[AntonyWright]

Hi thanks for the responses. Im not sure how to attach direct from autocad so I hope this image works. What I want to draw is the 2 red lines.

 

[AntonyWright]

Meant to mention that they are not inline with the center of the circles and I would want to remove the sections between them. Thanks

[ReMark]

Use the TRIM command to cut out what you don't want.

 

Use the PEDIT command with the JOIN option to combine the lines and arc segments into continuous polylines.

[AntonyWright]

Thank you - I shall go and give it a go.

[ReMark]

One end product of your lines and circles.