In which diagram do angles 1 and 2 form a linear pair?

Answer

A linear pair is formed by two adjacent angles whose non-shared sides create a straight line. Look for angles 1 and 2 that meet this description among the diagrams. Check for their measures adding up to 180 degrees to confirm.

Explanation

To identify which diagram illustrates angles 1 and 2 forming a linear pair, it's essential to understand what a linear pair is. A linear pair consists of two adjacent angles that form a straight line, which means their measures add up to 180 degrees.

When you look at the diagrams provided, you should look for angles that share a common ray (or side) and where the other sides form a straight line.

If you find any diagram showing angles labeled '1' and '2' that are next to each other and their non-shared sides form a straight line, that would indeed be a linear pair.

For example, if angle 1 measures 120 degrees and angle 2 measures 60 degrees, since 120 + 60 = 180, this confirms they form a linear pair.

Hope this clarification helps you find the right diagram!