120 - Reflections Flashcardizz

Front

What is a reflection in geometry?

Back

A reflection in geometry is a transformation that flips a figure over a line called the line of reflection.

Front

What is the transformation that slides a figure along a line called?

Back

Translation.

Front

What is the transformation that rotates a figure around a point called?

Back

Rotation.

Front

What is the transformation that stretches or shrinks a figure called?

Back

Dilation.

Front

Describe a reflection over the x-axis.

Back

A reflection over the x-axis flips the figure over the x-axis, changing the sign of the y-coordinates.

Front

Describe a reflection over the y-axis.

Back

A reflection over the y-axis flips the figure over the y-axis, changing the sign of the x-coordinates.

Front

What are the coordinates of a point after a reflection over the y-axis?

Back

(-x, y)

Front

What are the coordinates of a point after a reflection over the x-axis?

Back

(x, -y)

Front

Reflect Point C (2, 3) over the y-axis. What are the new coordinates?

Back

(-2, 3)

Front

Reflect Point B (1, 6) over the x-axis. What are the new coordinates?

Back

(1, -6)