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If two angles are supplementary and one angle measures 120 degrees, what is the

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Question: If two angles are supplementary and one angle measures 120 degrees, what is the measure of the other angle? (2022)

Options:

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

Correct Answer: 60 degrees

Exam Year: 2022

Solution: 

Supplementary angles sum up to 180 degrees. Therefore, the other angle = 180 - 120 = 60 degrees.

If two angles are supplementary and one angle measures 120 degrees, what is the

Practice Questions

Q1
If two angles are supplementary and one angle measures 120 degrees, what is the measure of the other angle? (2022)
  1. 60 degrees
  2. 90 degrees
  3. 120 degrees
  4. 180 degrees

Questions & Step-by-Step Solutions

If two angles are supplementary and one angle measures 120 degrees, what is the measure of the other angle? (2022)
  • Step 1: Understand that supplementary angles are two angles that add up to 180 degrees.
  • Step 2: Identify the measure of the first angle, which is given as 120 degrees.
  • Step 3: Use the formula for supplementary angles: Other angle = 180 degrees - First angle.
  • Step 4: Substitute the value of the first angle into the formula: Other angle = 180 - 120.
  • Step 5: Calculate the result: Other angle = 60 degrees.
  • Supplementary Angles – Supplementary angles are two angles whose measures add up to 180 degrees.
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