Develop a sense of understanding. Pupils learn eight definitions dealing with types of lines and angles formed when two lines are crossed by another line. Learners use the definitions to identify the lines and pairs of angles in figures before practicing identifying the figures. They also determine whether statements about the definitions are true or false.

Concepts

parallel lines, parallel lines with a transversal, skew lines, planes, transversal, alternate interior angles, corresponding angles, interior angles, exterior angles

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Instructional Ideas

• Create a word wall with the vocabulary words and their definitions
• Develop a flipbook for the different types of angles formed by a transversal and two lines to use throughout the unit

Classroom Considerations

• First lesson in a seven-part unit on lines and angles

• This video is hosted on YouTube

Pros

• The worksheet includes space to organize notes and definitions from the presentation
• Encourages individuals to pause the video to answer the questions before hearing the answers

Cons

• None

Common Core

SL.9-10.2 SL.11-12.2 MP6 HSG-CO.A.1