Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.
Related Lessons
4th Grade
Are You a Square?!
Lesson 5
Use attributes of quadrilaterals (number of sides and type of angles) to sort and classify shapes. Use attributes of quadrilaterals to sort and classify shapes.
4th Grade
Triangle Yoga
Lesson 4
Use your body and form several yoga poses to help create, describe, and name different types of triangles. Name their angles. Move into yoga poses to help create, describe, and name different types of triangles.
