8. What statement could be used to prove that m n? O 24살 26 O mz1+m 22= 180° O mZ3 + m = 180° O 22쓸 27 2. 3.

Elementary Geometry For College Students, 7e
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Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
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### Proving Parallel Lines

The image presents a diagram featuring two parallel lines, labeled as \( m \) and \( n \), which are intersected by a transversal line labeled \( t \). The intersections form eight angles, numbered 1 through 8. Each angle is marked at the point where the lines intersect.

Here's a detailed transcription of the diagram and the question:

---

**Diagram Description:**

- **Line \( t \):** A transversal line intersecting parallel lines \( m \) and \( n \).
- **Line \( m \):** A parallel line intersected by \( t \).
- **Line \( n \):** Another parallel line below line \( m \) intersected by \( t \).

**Angles formed:**
- At the intersection of \( m \) and \( t \): Angles 1, 2, 3, and 4.
- At the intersection of \( n \) and \( t \): Angles 5, 6, 7, and 8.

---

**Question:**

*What statement could be used to prove that \( m \parallel n \)?*

1. \( \angle 4 \cong \angle 6 \)
2. \( m \angle 1 + m \angle 2 = 180^\circ \)
3. \( m \angle 3 + m \angle 6 = 180^\circ \)
4. \( \angle 2 \cong \angle 7 \)

**Options:**
- O \( \angle 4 \cong \angle 6 \)
- O \( m \angle 1 + m \angle 2 = 180^\circ \)
- O \( m \angle 3 + m \angle 6 = 180^\circ \)
- O \( \angle 2 \cong \angle 7 \)

---

### Explanation:

To determine which statement can be used to prove that lines \( m \) and \( n \) are parallel, let's analyze each option:

1. **\( \angle 4 \cong \angle 6 \):** This states that angle 4 is congruent to angle 6. If these angles are corresponding angles, this could help prove the lines are parallel.

2. **\( m \angle 1 + m \angle 2 = 180^\circ \):** This states that the sum of the measures of angle 1
Transcribed Image Text:### Proving Parallel Lines The image presents a diagram featuring two parallel lines, labeled as \( m \) and \( n \), which are intersected by a transversal line labeled \( t \). The intersections form eight angles, numbered 1 through 8. Each angle is marked at the point where the lines intersect. Here's a detailed transcription of the diagram and the question: --- **Diagram Description:** - **Line \( t \):** A transversal line intersecting parallel lines \( m \) and \( n \). - **Line \( m \):** A parallel line intersected by \( t \). - **Line \( n \):** Another parallel line below line \( m \) intersected by \( t \). **Angles formed:** - At the intersection of \( m \) and \( t \): Angles 1, 2, 3, and 4. - At the intersection of \( n \) and \( t \): Angles 5, 6, 7, and 8. --- **Question:** *What statement could be used to prove that \( m \parallel n \)?* 1. \( \angle 4 \cong \angle 6 \) 2. \( m \angle 1 + m \angle 2 = 180^\circ \) 3. \( m \angle 3 + m \angle 6 = 180^\circ \) 4. \( \angle 2 \cong \angle 7 \) **Options:** - O \( \angle 4 \cong \angle 6 \) - O \( m \angle 1 + m \angle 2 = 180^\circ \) - O \( m \angle 3 + m \angle 6 = 180^\circ \) - O \( \angle 2 \cong \angle 7 \) --- ### Explanation: To determine which statement can be used to prove that lines \( m \) and \( n \) are parallel, let's analyze each option: 1. **\( \angle 4 \cong \angle 6 \):** This states that angle 4 is congruent to angle 6. If these angles are corresponding angles, this could help prove the lines are parallel. 2. **\( m \angle 1 + m \angle 2 = 180^\circ \):** This states that the sum of the measures of angle 1
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