How to draw half circle in Pages
I saw an old discussion asking this very question but I found a MUCH easier solution.
I wanted to join two lines with a fillet, ie a curved join. I drew the two lines in Pages and then inserted a Rounded Rectangle.
Using one of the screen capture tools Ctrl-$, which on a uk keyboard is Shift-Ctrl-4, I captured the appropriate corner from the rectangle. This capture tool copies the clipping into a new email.
I selected the clipping in the email and dragged it back into Pages. It needed resizing before I moved it over the join.
I hope this helps somebody.
MacBook, macOS 10.13