In the new diagram, the angles 1 through 5 are formed by the intersection of lines $l$, $m$, and $n$.

To identify linear pairs, recall that they consist of two adjacent angles whose non-common sides form a straight line (i.e., their sum is 180 degrees).

Linear Pairs in the Diagram:

• Angles 1 and 2: They are adjacent and together form a straight line along line $l$. Thus, they are a linear pair.
• Angles 2 and 3: These angles are adjacent and form a straight line along line $n$. Therefore, they are a linear pair.
• Angles 3 and 4: These angles are adjacent and form a straight line along line $l$. Hence, they are a linear pair.
• Angles 4 and 5: These angles are adjacent and form a straight line along line $m$. Therefore, they are a linear pair.

Summary:

• Linear Pairs:
  • Angles 1 and 2
  • Angles 2 and 3
  • Angles 3 and 4
  • Angles 4 and 5

Do you have any further questions or need more details?

Here are some related questions:

1. How does the concept of supplementary angles relate to linear pairs?
2. Can three angles form a linear pair? Why or why not?
3. If angle 2 is 70 degrees, what is the measure of angle 1?
4. How do linear pairs differ from vertically opposite angles?
5. Can angles 1 and 3 ever form a linear pair?

Tip: Linear pairs are always adjacent and share a common side. Identifying the straight line they form can help determine if they are a linear pair.