How to Use a Protractor to Measure Angles - Step-by-Step Guide #224326 (License: Personal Use)

The image shows a clear plastic protractor aligned with two intersecting lines forming an acute angle, while a pencil points precisely at the 45-degree mark. The protractor’s dual-scale (0-180° both ways) and center origin point are visible, emphasizing correct alignment technique. This visual serves as an educational aid for understanding angle measurement fundamentals.

Used in educational web pages, math tutorials, or STEM lesson plans to illustrate angle measurement; matches user intent of learning or teaching basic geometry concepts.