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Small arc segment deviation graphic

Does anyone have any graphic to show why you should measure at least 180 degrees of a circle? I remember seeing a graphic that showed the calculation of a deviated point on a small arc segment. Does anyone have any examples to show this. I am doing some training.
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  • Just create a program with a constructed circle from points. One with 360 degrees and 12 points. Offset one point " say 0.01" from the rest and generate a True position. do the same with 90 degrees. There used to be a video that someone did that showed someone doing this and the XY and diameter exploded.


    Yeah, that was a very useful video. Too bad I didn't bookmark the link. But, as you say, it is pretty easy to do the demonstration yourself.
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  • Just create a program with a constructed circle from points. One with 360 degrees and 12 points. Offset one point " say 0.01" from the rest and generate a True position. do the same with 90 degrees. There used to be a video that someone did that showed someone doing this and the XY and diameter exploded.


    Yeah, that was a very useful video. Too bad I didn't bookmark the link. But, as you say, it is pretty easy to do the demonstration yourself.
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