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a line tangent to two circles

piero's Photo piero 20 Aug 2019

how can i draw a line tangent to two circles?

it looks impossile with nanaocad
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Kreator's Photo Kreator 20 Aug 2019

Now way to do it in 1 command, as I know.
That's geometry: connect centres of the circles with a line, divide this lines proportionally to circles' radius - this point will be crossed by the tangent line to both circles.
R1=50
R2=20
L=L1+L2=224.88
R1/R2=L1/L2=50/20
We find
L1=160.63
L2=64.25
or draw 2 lines 50 and 20 and scale (50+20) to fit L=224.88.

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Hellen_V's Photo Hellen_V 22 Aug 2019

 piero, on 20 August 2019 - 02:16 PM, said:

how can i draw a line tangent to two circles?

it looks impossile with nanaocad
Hi,
tangent line to two circles is available in nanoCAD Plus.
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Pedro Caeiro's Photo Pedro Caeiro 28 Jul 2023

You can use the method described in this page:
https://en.wikipedia...ines_to_circles
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