Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement.
Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.
Students will learn an angle is composed of two rays sharing an endpoint, called the vertex of the angle. Students will also learn that the word angle comes from the Latin word angulus, meaning corner. Also, students will learn how to visually compare angles. A lesson on all of the aforementioned is here. Students can practice visually comparing measures of angles here. After that, students will practice measuring angles in degrees using a protractor. Some problems should ask students to measure angles greater than \(180^\circ.\) Then students will learn how to classify angles as acute, right, obtuse, reflex, straight, and whole. Conclude this lesson by giving your students this challenge.
Note: The MAA lists the challenge as 7.G.B.5, but the challenge has nothing to do with angle relationships, so I've placed the challenge here, as I believe this is the right place for it.
Note: What are concepts of angle measurement? This Common Core standard is so vague.