Given: m Z PQR = mZTSR mZ1 = mZ3 Prove: m2 = mZ4 2 R. P.

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
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**Title: Proving Angle Measurements Using Given Information**

**Objective:** Use the given information to prove that \( m \angle 2 = m \angle 4 \).

**Diagram Explanation:**

The image shows a geometric diagram consisting of two intersecting lines forming four angles at points \( Q, R, \) and \( S \). 
- Point \( P \) is an endpoint of one ray, and point \( T \) is an endpoint of another ray.
- The angles formed at these intersections are labeled as angles 1, 2, 3, and 4.
- The angles and corresponding points are denoted as \(\angle PQR\) and \(\angle TSR\).

**Given Information:**
1. \( m \angle PQR = m \angle TSR \)
2. \( m \angle 1 = m \angle 3 \)

**Proof Required:** Show that \( m \angle 2 = m \angle 4 \).

**Proof Framework:**

- **Statement 1:** \( m \angle PQR = m \angle TSR \)
  - **Reason 1:** Given

- **Statement 2:** \( m \angle 1 = m \angle 3 \)
  - **Reason 2:** Given

- **Statement 3:** \( m \angle 2 = m \angle 4 \)
  - **Reason 3:** This is to be proven

**Conclusion:** By using the given equalities and the properties of angles, you can deduce the equality between angles 2 and 4.
Transcribed Image Text:**Title: Proving Angle Measurements Using Given Information** **Objective:** Use the given information to prove that \( m \angle 2 = m \angle 4 \). **Diagram Explanation:** The image shows a geometric diagram consisting of two intersecting lines forming four angles at points \( Q, R, \) and \( S \). - Point \( P \) is an endpoint of one ray, and point \( T \) is an endpoint of another ray. - The angles formed at these intersections are labeled as angles 1, 2, 3, and 4. - The angles and corresponding points are denoted as \(\angle PQR\) and \(\angle TSR\). **Given Information:** 1. \( m \angle PQR = m \angle TSR \) 2. \( m \angle 1 = m \angle 3 \) **Proof Required:** Show that \( m \angle 2 = m \angle 4 \). **Proof Framework:** - **Statement 1:** \( m \angle PQR = m \angle TSR \) - **Reason 1:** Given - **Statement 2:** \( m \angle 1 = m \angle 3 \) - **Reason 2:** Given - **Statement 3:** \( m \angle 2 = m \angle 4 \) - **Reason 3:** This is to be proven **Conclusion:** By using the given equalities and the properties of angles, you can deduce the equality between angles 2 and 4.
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