2. Triangle ABC is graphed on a plane. The coordinates are A(-2,5), B(-8,5), and C(-2,-1). If A ABC is reflected over the line y = x, what are the coordinates of the vertices of A A'B'C'? B B. C A' = (2.5) (4,5) B' = C' =

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
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**Triangle Reflection Exercise**

In this exercise, you will explore the transformation of a triangle reflected over a given line in a coordinate plane.

**Problem Statement:**
Triangle \( \triangle ABC \) is graphed on a coordinate plane. The coordinates are as follows:
- \( A(-2, 5) \)
- \( B(-8, 5) \)
- \( C(-2, -1) \)

Task: Reflect \( \triangle ABC \) over the line \( y = x \).

**Objectives:**
Determine the coordinates of the vertices of the reflected triangle \( \triangle A'B'C' \).

**Graphical Explanation:**

The provided graph displays triangle \( \triangle ABC \) with the points labeled \( A \), \( B \), and \( C \). The triangle is oriented such that \( A \) and \( B \) are on the positive side of the y-axis, while \( C \) crosses the negative side. The line \( y = x \) serves as the axis of reflection.

**reflection outcome:**

After calculating the reflection of each point over the line \( y = x \):
- \( A' = (5, -2) \)
- \( B' = (5, -8) \)
- \( C' = (-1, -2) \)

These coordinates are derived through the process of swapping the x and y values of the original points, as reflecting over the line \( y = x \) involves this transformation.

By understanding reflections and coordinate transformations, you gain fundamental skills in geometric analysis and spatial reasoning.
Transcribed Image Text:**Triangle Reflection Exercise** In this exercise, you will explore the transformation of a triangle reflected over a given line in a coordinate plane. **Problem Statement:** Triangle \( \triangle ABC \) is graphed on a coordinate plane. The coordinates are as follows: - \( A(-2, 5) \) - \( B(-8, 5) \) - \( C(-2, -1) \) Task: Reflect \( \triangle ABC \) over the line \( y = x \). **Objectives:** Determine the coordinates of the vertices of the reflected triangle \( \triangle A'B'C' \). **Graphical Explanation:** The provided graph displays triangle \( \triangle ABC \) with the points labeled \( A \), \( B \), and \( C \). The triangle is oriented such that \( A \) and \( B \) are on the positive side of the y-axis, while \( C \) crosses the negative side. The line \( y = x \) serves as the axis of reflection. **reflection outcome:** After calculating the reflection of each point over the line \( y = x \): - \( A' = (5, -2) \) - \( B' = (5, -8) \) - \( C' = (-1, -2) \) These coordinates are derived through the process of swapping the x and y values of the original points, as reflecting over the line \( y = x \) involves this transformation. By understanding reflections and coordinate transformations, you gain fundamental skills in geometric analysis and spatial reasoning.
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