Ergonomic plastic angle ruler with a simple and convenient design for everyday use. Grip design makes it easy to hold and take with you, improving control during measurement and drawing. Geometry semicircle protractor: use it to draw and teach angles, and to draw circles as needed for geometry lessons. Math protractor: a simple, practical multifunction tool that combines angle measurement and drawing capabilities in one instrument. Compact and portable, lightweight plastic construction for durability and easy handling. Key attributes: function - angle measurement, angle drawing, circle drawing; material - plastic; size - compact for classroom, home, or workshop use; performance - reliable, easy to use. 2-3 practical use scenarios: - In math class or tutoring to teach and demonstrate angle relationships and circle construction. - In drafting, carpentry, or DIY projects to mark and transfer precise angles and arc lengths. - For homework or quick on-site angle checks when a simple, multi-task instrument is needed.