What are the different types of lines of symmetry? Learn about them in this video. Visit http://www.math4nyc.org to view a comprehensive list of our resources within a complete curriculum.
Intro to Angles for Kids: Understanding Angles for Children - FreeSchool Math
Angles are the space between two lines that meet at a point, or vertex. Angles are measured in degrees, often with the help of a protractor. Acute, obtuse, reflex, straight, right - there are many different types of angles! Like this video if you want to see more videos about MATH!
Math Antics - Angles & Degrees
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How to measure angles using a protractor - why does it have two sets of measurements?
Explanation and demonstration of how to measure angles that open from the left or right