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In a pair of alternate exterior angles, if one angle measures 120 degrees, what

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Question: In a pair of alternate exterior angles, if one angle measures 120 degrees, what is the measure of the other angle? (2021)

Options:

  1. 60 degrees
  2. 120 degrees
  3. 180 degrees
  4. 90 degrees

Correct Answer: 120 degrees

Exam Year: 2021

Solution: 

Alternate exterior angles are equal when two parallel lines are cut by a transversal. Therefore, if one angle is 120 degrees, the other alternate exterior angle is also 120 degrees.

In a pair of alternate exterior angles, if one angle measures 120 degrees, what

Practice Questions

Q1
In a pair of alternate exterior angles, if one angle measures 120 degrees, what is the measure of the other angle? (2021)
  1. 60 degrees
  2. 120 degrees
  3. 180 degrees
  4. 90 degrees

Questions & Step-by-Step Solutions

In a pair of alternate exterior angles, if one angle measures 120 degrees, what is the measure of the other angle? (2021)
  • Step 1: Understand what alternate exterior angles are. They are pairs of angles that are on opposite sides of a transversal and outside the two parallel lines.
  • Step 2: Remember that when two parallel lines are cut by a transversal, alternate exterior angles are equal.
  • Step 3: Identify the measure of one angle in the pair. In this case, one angle measures 120 degrees.
  • Step 4: Since alternate exterior angles are equal, the measure of the other angle is also 120 degrees.
  • Alternate Exterior Angles – Alternate exterior angles are formed when a transversal intersects two parallel lines, and they are equal in measure.
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