Translations, Reflections, Rotations

Front

After a figure is transformed, it is the _____________.

Back

image

Front

Before a figure is transformed it is the __________________.

Back

pre-image

Front

Which rule is used for reflecting across y=x?

Back

(x, y) -> (y, x)

Front

Reflect the point (2, -4) over the y-axis.

Back

(-2, -4)

Front

Figures that are the same shape and size are said to be which of the following?

Back

congruent

Front

What is a translation in geometry?

Back

A translation is a transformation that moves every point of a figure the same distance in the same direction.

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 a rotation in geometry?

Back

A rotation is a transformation that turns a figure around a fixed point at a certain angle.

Front

What does it mean for two figures to be congruent?

Back

Two figures are congruent if they have the same shape and size.

Front

What is the effect of a translation on the coordinates of a point (x, y)?

Back

A translation moves the point to (x+a, y+b) where a and b are the distances moved in the x and y directions.