Alternate Exterior Angles: Definition & Theorem


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The alternate exterior angles theorem states that when you have two parallel lines cut by a transversal, the alternate exterior angles are ___ to each other.

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1. How many pairs of alternate exterior angles are in the diagram below?

2. If the measurement of angle 1 is 60, what is the measurement of angle 8?

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About This Quiz & Worksheet

Alternate exterior angles occur when a third line crosses through two other lines. In this quiz, your knowledge of alternate exterior angles and how to calculate them will be assessed, and the worksheet is available to help you study.

Quiz & Worksheet Goals

This quiz will test you on:

  • Terms relating to alternate exterior angles
  • Recognizing alternate exterior angles
  • Calculating the measurement of angles

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the relevant lesson on alternate exterior angles
  • Problem solving - use knowledge you've gained to calculate the measurement of alternate exterior angles
  • Information recall - remember the information you've learned to answer questions about types of angles

Additional Learning

If you wish to learn more about this topic, read through the accompanying lesson, Alternate Exterior Angles: Definition, Theorem & Quiz. This lesson will cover the following objectives:

  • Define alternate exterior angles
  • Define transversal lines
  • Explain the alternate exterior angles theorem
  • Know how to identify alternate exterior angles
  • Understand how to measure alternate exterior angles