Open Windows Power Shell (Normal Mode)
First of All Creat New Project of Angular9
Create New Folder where you want
with in the Folder Press / Hold Shift Button and then Press Mouse right CLick
Run this Command
ng new ProjectName
move into to your Project by this command
cd ProjectName
Run or Serve your Project on your localhost
by using following command
ng serve -o
you can see your project in your Browser against
localhost:4200
or
127.0.0.1:4200