How to draw figures with mathematical font for LaTeX

How to create figures for LaTeX documents

1. Create figure with PowerPoint
2. Save as PDF file
3. Open the PDF file with Inkscape and save as EPS file.
4. Use LaTex to include the EPS file

How to include math labels with consistent font with LaTeX

1. Install Latin Modern Math font
2. Reboot the computer and select the font in PowerPoint.

3. Proceed the above steps and save the file as EPS.

Reference:
https://tex.stackexchange.com/questions/22454/what-is-the-name-of-the-default-font-in-math-mode