The parallel line through a given point
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Problem:



Solution:

The start situation is shown in the following window. You may only use "compass and rulers", i.e. the tools "circle from centre and pripheral point" and "line through 2 points". Moreover, you can create intersection points. The construction itself is now left to you - to check if you have learned enough on the preceeding pages and can apply these insights to a new situation.

If you don't get allong with this problem you can drag the "help arrow" to the right, revealing some small hints. But surely you don't need such a help!





Result:




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