Homeschool Math
Homeschool Math: Lines, Rays, and Angles
This fourth-grade geometry instructional activity teaches the definitions for a line, ray, angle, acute angle, right angle, and obtuse angle. We also study how the size of the angle is ONLY determined by how much it has "opened" as...
Mocomi & Anibrain Digital Technologies
Mocomi: Lines and Angles
Provides details about the properties of straight lines, types of straight lines, line segments, rays, curved lines, and types of angles.