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Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
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24. consider RST and XYZ shown below. Which postulate or theorem proves that the triangles are congruent 

**Question 24: Congruence of Triangles**

Consider ∆RST and ∆XYZ shown below.

Two triangles are depicted:
1. Triangle RST:
    - Angle at vertex S is 48°
    - Side RS = 7 units
    - Side RT = 3 units
    
2. Triangle XYZ:
    - Angle at vertex Y is 48°
    - Side XY = 7 units
    - Side YZ = 3 units

**Which postulate or theorem proves that the triangles are congruent?**
- **A. SSS**
- **B. SSA**
- **C. SAS**
- **D. ASA**

*Note:* The postulates or theorems used to prove congruence between triangles include:
- **SSS (Side-Side-Side):** All three corresponding sides are equal.
- **SAS (Side-Angle-Side):** Two corresponding sides and the included angle are equal.
- **ASA (Angle-Side-Angle):** Two corresponding angles and the included side are equal.
- **SSA (Side-Side-Angle):** Generally does not prove congruence unless specific conditions are met.

*Detailed Explanation of Diagrams:*
- The triangles have one side measuring 7 units and another side measuring 3 units.
- Both triangles have one angle measuring 48°.
- The orientation and labeling of vertices correspond in such a way that it suggests using the corresponding sides and included angle for congruence determination.

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Transcribed Image Text:**Question 24: Congruence of Triangles** Consider ∆RST and ∆XYZ shown below. Two triangles are depicted: 1. Triangle RST: - Angle at vertex S is 48° - Side RS = 7 units - Side RT = 3 units 2. Triangle XYZ: - Angle at vertex Y is 48° - Side XY = 7 units - Side YZ = 3 units **Which postulate or theorem proves that the triangles are congruent?** - **A. SSS** - **B. SSA** - **C. SAS** - **D. ASA** *Note:* The postulates or theorems used to prove congruence between triangles include: - **SSS (Side-Side-Side):** All three corresponding sides are equal. - **SAS (Side-Angle-Side):** Two corresponding sides and the included angle are equal. - **ASA (Angle-Side-Angle):** Two corresponding angles and the included side are equal. - **SSA (Side-Side-Angle):** Generally does not prove congruence unless specific conditions are met. *Detailed Explanation of Diagrams:* - The triangles have one side measuring 7 units and another side measuring 3 units. - Both triangles have one angle measuring 48°. - The orientation and labeling of vertices correspond in such a way that it suggests using the corresponding sides and included angle for congruence determination. **Powered by LinkIt!**
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