: Most accurate way to cut up a shape at 45 degrees I am working with the latest version of Adobe Illustrator. I have the following: I would like to cup the shape at the following location,

@Cofer715

Click TRIM or MERGE in the pathfinder, then use the Direct selection tool and delete all unneeded anchor points!

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@Lee3735518

First of all, I worked in Outline mode (Ctrl+Y).


You have you shapes stacked.

Turn on Smart Guides (Ctrl+U) it will help to fit exactly into intersection points. Do a straight line of cut with Pen tool (P).

Do and complete any shape which will enclose your smaller rectangle

Select all shapes, open Pathfinder panel and use Trim.

Select unnecessary shapes with Direct Select (A), you can select even part of path or one point. And press Delete. At first press you will delete exactly what selected. After delete the whole path will be selected - press Delete second time.

Back to Normal mode (Ctrl+Y).

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