Math Problem Statement

Triangle ABC with vertices at A(0, 2), B(2, 2), and C(2, 0) is reflected in the x-axis. Draw △ABC and its image △A'B'C'.

Solution

The question is asking to reflect triangle ABCABC with vertices A(0,2)A(0, 2), B(2,2)B(2, 2), and C(2,0)C(2, 0) across the x-axis and to draw both triangle ABCABC and its image ABCA'B'C'.

Reflection across the x-axis

To reflect a point across the x-axis, we change the sign of the y-coordinate, keeping the x-coordinate the same. Thus:

  • The reflection of point A(0,2)A(0, 2) is A(0,2)A'(0, -2).
  • The reflection of point B(2,2)B(2, 2) is B(2,2)B'(2, -2).
  • The reflection of point C(2,0)C(2, 0) is C(2,0)C'(2, 0) (since its y-coordinate is already 0, it doesn't change).

Plotting the points

Now we have the following vertices:

  • Original points: A(0,2)A(0, 2), B(2,2)B(2, 2), C(2,0)C(2, 0)
  • Reflected points: A(0,2)A'(0, -2), B(2,2)B'(2, -2), C(2,0)C'(2, 0)

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Math Problem Analysis

Mathematical Concepts

Geometry
Reflections
Coordinate Geometry

Formulas

Reflection across x-axis: (x, y) → (x, -y)

Theorems

Reflection Theorem

Suitable Grade Level

Grades 6-8