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GeoGebraGeoGebra Classroom

Reflections

Exploring Reflections

Instructions

- Move the "mirror line", which we call the Line of Reflection in our class, to the appropriate location to answer the questions below.

1. Line of Reflection: Y-axis

What happens to the coordinates of the vertices of the shape after a reflection about the y-axis?

2. Generalize your hypothesis into a rule that will illustrate the changes in the coordinates.

Reflection about the y-axis: (x, y)

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

3. Line of Reflection: X-axis

What happens to the coordinates of the vertices of the shape after a reflection about the x-axis?

4. Generalize your hypothesis into a rule that will illustrate the changes in the coordinates.

Reflection about the x-axis: (x, y)

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

5. Line of Reflection: y = x

What happens to the coordinates of the vertices of the shape after a reflection about the line y=x?

6. Generalize your hypothesis into a rule that will illustrate the changes in the coordinates.

Reflection about the line y = x. (x, y)

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

7. Line of Reflection: y = -x

What happens to the coordinates of the vertices of the shape after a reflection about the line y=-x?

8. Generalize your hypothesis into a rule that will illustrate the changes in the coordinates.

Reflection about the line y = -x. (x, y)

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)