1.  Declarative: Angular simplifies UI development by enabling developers to focus on describing the UI state and structure rather than imperative steps. This approach enhances code readability and maintenance.

2. Component-Based: Angular emphasizes building UIs as reusable components, facilitating modularity and scalability. Components encapsulate both UI elements and behavior, fostering code reusability and collaboration among developers.

3. Dependency Injection: Angular utilizes dependency injection to manage component dependencies and facilitate testing and reusability. This design pattern promotes modular, maintainable code and simplifies unit testing.

4. TypeScript: Angular is built with TypeScript, a statically typed superset of JavaScript that enhances code quality and developer productivity. TypeScript provides features like static typing, interfaces, and advanced tooling, improving code robustness and maintainability.

5. RxJS: Angular leverages Reactive Extensions for JavaScript (RxJS) to handle asynchronous operations and manage application state. RxJS enables reactive programming paradigms like observables and operators, simplifying complex asynchronous code and enhancing application performance.

6. Modular Architecture: Angular follows a modular architecture, allowing developers to organize code into feature modules for better maintainability and reusability. Modules encapsulate related components, services, and directives, promoting separation of concerns and scalability.

7. CLI Tooling: Angular provides a Command Line Interface (CLI) for scaffolding, building, and testing Angular applications. The CLI streamlines development workflows, automates repetitive tasks, and enforces best practices, improving developer productivity and code quality.

8. Material Design: Angular Material is a UI component library based on Google's Material Design principles, offering pre-designed components for building responsive, accessible web applications. Angular Material enhances UI consistency, usability, and aesthetics, reducing development time and effort.

9. Cross-Platform Development: Angular extends beyond web development to mobile and desktop platforms with frameworks like Ionic and Electron. Developers can leverage their Angular skills to build native mobile and desktop applications, sharing code and speeding up development cycles.

10. Community and Ecosystem: Angular boasts a vibrant community and rich ecosystem of libraries, tools, and resources, supporting developers in building robust, scalable applications. From routing to state management, Angular's ecosystem offers solutions for various development challenges.