How to use some tools in illustrator?

Shortcut keys for illustrator tools in cc 2019:-

Polygon Tool:

Drag with left click + arrow up/ down = Sides will be increase or decrease

Star Tool:

Drag with left click + arrow up/ down = Sides will be increase or decrease

Also you can use with the same as above for the star in thin side with alt key and when we use shift key then it will come back as your previous shape.

Line Tool:

Line tool with shift then it will be straight line. You can copy with Alt then need If another same then use ctrl+d(means duplicate of the object). you will be found copy more lines.

 

Rotate Tool: 

First we need to create any object and then use R key for the selecting rotate tool in illustrator after then select object and find rotation point and move any where as you want then use alt key with left click you will found your object now rotate with new copy. If you want move again and again then use ctrl+d. you will found as below screenshot:

Flip Option in illustrator:

Create new object then go to him properties and you will find symbol name: “Flip Along vertical axis” and in another “Flip Along horizontal axis” as in the screenshot below:

Note: For the Copy paste in the same place: ctrl+c > ctrl+f