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14. 丰 In triangle ABC shown at left, tick marks of equal number represent sides of equal length. Therefore, the point along line segment AB is the midpoint of AB. What is the value of B in terms of a and t? C. - D. 2 a - A. a B. t

14. 丰 In triangle ABC shown at left, tick marks of equal number represent sides of equal length. Therefore, the point along line segment AB is the midpoint of AB. What is the value of B in terms of a and t? C. - D. 2 a - A. a B. t

Elementary Geometry For College Students, 7e
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
SectionP.CT: Test
Problem 1CT
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### Analysis of Triangle ABC #### Diagram Description: The diagram shows triangle \(ABC\) with three points labeled \(A\), \(B\), and \(C\). Several line segments within the triangle are marked: - **Equal Sides**: Tick marks on the sides indicate that side \(AC\) equals side \(BC\), and two segments within the triangle are each equal to each other. This suggests symmetrical properties. - **Triangle Angles**: Angles \(\alpha\) and \(\beta\) are labeled within the triangle. - **Vertex Labeling**: The vertex opposite the base \(AC\) is \(B\), where angle \(\beta\) is located. #### Problem Statement: In triangle \(ABC\) shown, tick marks of equal number represent sides of equal length. Therefore, the point along line segment \(AB\) is the midpoint of \(AB\). What is the value of \(\beta\) in terms of \(\alpha\) and \(t\)? #### Answer Choices: A. \(\alpha\) B. \(t\) C. \(\frac{\pi}{2} - \alpha\) D. \(\frac{\pi}{2} - \alpha\) ### Explanation: The problem requires finding the relationship between angles \(\alpha\), \(\beta\), and \(t\) in the context of triangle geometry and congruence. The possible solutions involve assessing the symmetry and known angle relationships of the triangle given its geometric properties.
Transcribed Image Text:### Analysis of Triangle ABC #### Diagram Description: The diagram shows triangle \(ABC\) with three points labeled \(A\), \(B\), and \(C\). Several line segments within the triangle are marked: - **Equal Sides**: Tick marks on the sides indicate that side \(AC\) equals side \(BC\), and two segments within the triangle are each equal to each other. This suggests symmetrical properties. - **Triangle Angles**: Angles \(\alpha\) and \(\beta\) are labeled within the triangle. - **Vertex Labeling**: The vertex opposite the base \(AC\) is \(B\), where angle \(\beta\) is located. #### Problem Statement: In triangle \(ABC\) shown, tick marks of equal number represent sides of equal length. Therefore, the point along line segment \(AB\) is the midpoint of \(AB\). What is the value of \(\beta\) in terms of \(\alpha\) and \(t\)? #### Answer Choices: A. \(\alpha\) B. \(t\) C. \(\frac{\pi}{2} - \alpha\) D. \(\frac{\pi}{2} - \alpha\) ### Explanation: The problem requires finding the relationship between angles \(\alpha\), \(\beta\), and \(t\) in the context of triangle geometry and congruence. The possible solutions involve assessing the symmetry and known angle relationships of the triangle given its geometric properties.
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