Questions: 20. Which figure has exactly one line of symmetry? A. Figure I B. Figure II C. Figure III

Transcript text: 20. Which figure has exactly one line of symmetry? A. Figure I B. Figure II C. Figure III

Solution

Step 1: Identify the figure with exactly one line of symmetry

Answer: Figure III

Step 2: Reflect the triangle over the x-axis

Given vertices:

Reflecting over the x-axis:

Step 3: Rotate the triangle 90° clockwise

Using the reflected coordinates:

Rotating 90° clockwise:

Figure with exactly one line of symmetry: Figure III
Reflected coordinates over the x-axis:
- \( G'(0, 2) \)
- \( Y'(-3, 0) \)
- \( M'(-3, 4) \)
Rotated coordinates 90° clockwise:
- \( G''(2, 0) \)
- \( Y''(0, 3) \)
- \( M''(4, 3) \)

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