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The measure of an angle is . What is the measure of its supplementary angle?

Ask by Barnett Ross. in the United States
Mar 20,2025

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Tutor-Verified Answer

Answer

The supplementary angle is .

Solution

  1. Recall that supplementary angles add up to .
  2. Let be the measure of the supplementary angle. Then, we have
  3. Solve for by subtracting from both sides:
  4. Compute the subtraction:
Thus, the measure of the supplementary angle is .

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Mind Expander

To find the measure of the supplementary angle, you simply subtract the given angle from . So, for an angle measuring , the calculation is:
This means the supplementary angle measures .
Did you know that the concept of supplementary angles has been used since ancient times and is a crucial part of geometry? Ancient Greeks, like Euclid, laid the groundwork for understanding angles and their relationships, which still impacts how we study geometry today!
When working with angles, many people often forget that only two angles can be supplementary per the definition, leading to confusion with other angle types. Just remember—if the sum isn’t , then something’s amiss!

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