How to add some accents in Microsoft Word Equation for geometry

Question

I hope this will be the right place for my question. I'm working on a Geometry book and I have to type some accents and I cannot find the way to do it. Why Microsoft Word, because I tried with MathType and MathMagic but they make a huge mess on my files, even corrupted them. Also, I don't have time to learn Latex or money to pay another person to do it. I need these to be text, not images.

I'm desperate, and will be grateful of any hint.

The accents are the following:

• Triangle notation over a letter
• Arc notation over letters
• Semiplane symbol

Answer 1

You could use \above.

For $\overset{\Delta}{A}$, use A \above("Delta Symbol"), it'll become A┴Delta and then press Enter for $\overset{\Delta}{A}$.

For $\overset{\cap}{AB}$, use AB\above("cap symbol").