Reflections and Translations Review

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What is the line of reflection for a reflection across the y-axis?

Back

The line of reflection is the y-axis itself.

Front

How do you reflect a point (x, y) across the y-axis?

Back

The reflected point is (-x, y).

Front

How do you reflect a point (x, y) across the x-axis?

Back

The reflected point is (x, -y).

Front

What is a translation in geometry?

Back

A translation is a transformation that moves a figure from one position to another without changing its shape or orientation.

Front

How do you translate a point (x, y) right by 2 units?

Back

The new point will be (x + 2, y).

Front

How do you translate a point (x, y) down by 5 units?

Back

The new point will be (x, y - 5).

Front

What is the result of translating triangle A'B'C' to triangle ABC by moving right 2 and down 9?

Back

The coordinates of triangle ABC will be each point of A'B'C' moved right 2 and down 9.

Front

If a point (2, -4) is reflected over the y-axis, what is the new point?

Back

The new point is (-2, -4).

Front

What happens to the coordinates of a point when it is reflected over the x-axis?

Back

The y-coordinate changes sign, while the x-coordinate remains the same.