Grade 4 · Measurement and Data

CCSS.MATH.CONTENT.4.MD.C.5

Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement:

Read this standard on the official Common Core site

Lessons that teach this standard

• Angles: Naming, Measuring and Adding

  What an angle is, why a degree is a fraction of a full turn, how to name angles as acute, right or obtuse, and why angle measures add when angles sit side by side.