Setup Development Environment and check version of Angular 5

• Node.js : Node.js is an open source, cross-platform java scrip runtime environment.For install the Node.js go this link https://nodejs.org/en/download/ 
• NPM : npm is node.js package manager fro javascript programming language. It is automatically  installed with node.js.
• TypeScript: Need to install it using command -npm install -g typescript.
• Angular CLI(command Line Interface): is a tool to that allow us to create a project, build and run it on development server directly using command line.
• Command : npm install -g @angular/cli

Now, How to check installed 

1. Node.js: Type node -v

2. NPM: Type npm -v

3. Angular version: Type ng version