Reflections Flashcards

A transformation that flips a shape over a line, creating a mirror image.

The line over which a shape is reflected, acting as the mirror.

The reflected shape is congruent to the original and has the same size and shape.

If a point (x, y) is reflected in the x-axis, its new coordinates are (x, -y).

If a point (x, y) is reflected in the y-axis, its new coordinates are (-x, y).

If a point (x, y) is reflected in the line y = x, its new coordinates are (y, x).

If a point (x, y) is reflected in the line y = -x, its new coordinates are (-y, -x).

Points that lie on the line of reflection remain unchanged after the reflection.

State that it is a reflection, specify the line of reflection (e.g., x-axis, y-axis, y = x).

A reflection reverses the orientation of a shape (e.g., clockwise becomes anticlockwise).