method One: Enter directly in the template.
After opening the MathType software editing formula, click on the "Greek character" template in the MathType toolbar template where you need the Greek alphabet, which lists some of the common Greek letters, just click on the Insert.
Click the "Greek symbol" template to select the letter you want
Method Two: Use keyboard input.
The shortcut key for lowercase Greek letters is: ctrl+g+ the letter entered.
The keys to uppercase Greek letters are: Hold down ctrl+g first, and then release the letter that is entered by holding shift+.
The following figure is a comparison of the Greek and English letters in uppercase and lowercase:
According to the above table, it can be very simple to enter the Greek alphabet.
Method Three: Use the Insert Symbol PANEL.
In the MathType menu bar, select Edit-Insert symbol, and in the Insert Symbol dialog box, set view to font, symbol. Select the Greek alphabet you want in the symbol panel click Insert.
Symbol Panel Select the required Greek alphabet click Insert