Transformation 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 does it mean to reflect a point across the x-axis?

Back

To reflect a point (x, y) across the x-axis, the y-coordinate changes sign, resulting in the point (x, -y).

Front

What does it mean to reflect a point across the y-axis?

Back

To reflect a point (x, y) across the y-axis, the x-coordinate changes sign, resulting in the point (-x, y).

Front

What are the coordinates of the point P(5, 2) after reflecting across the x-axis?

Back

P' = (5, -2).

Front

What are the coordinates of the point P(5, 2) after reflecting across the y-axis?

Back

P' = (-5, 2).

Front

What are the coordinates of the point P(5, 2) after reflecting across the line y=x?

Back

P' = (2, 5).

Front

What is a rigid motion?

Back

A rigid motion is a transformation that preserves distance and shape, including reflections, rotations, and translations.

Front

Which transformation is NOT a rigid motion?

Back

Dilation is NOT a rigid motion because it changes the size of the figure.

Front

What is the result of reflecting the point (1, 4) across the x-axis?

Back

The result is (1, -4).

Front

What is the result of reflecting the point (1, 4) across the y-axis?

Back

The result is (-1, 4).