How to remove a fragment of a shape in PowerPoint? - Super User

I have a circle and I want to remove a fragment. I tried to use a square to include the fragment. But none of the Merge Shapes could achieve it. So how to do it properly?

How to Use Merge Shapes in PowerPoint - Xelplus - Leila Gharani

Mastering Graphics In PowerPoint - Create stunning slides using

Powerpoint Tutorial: How to Create a See-Through Cutout Effect

I want a shape so that only the portion inside the slide boundary

How to fragment Shapes in PowerPoint

How to Use Merge Shapes in PowerPoint - Xelplus - Leila Gharani

How to fragment Shapes in PowerPoint

Eraser for shapes on Powerpoint - Microsoft Community

How to Merge Shapes in PowerPoint? - GeeksforGeeks

Fragment Shapes Tool in PowerPoint 2013

Efficient Way To Un-Merge PowerPoint Shapes