Mini Flashcard: Translations & Reflections

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to create a new shape.

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 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 rotation in geometry?

Back

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

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a figure but not its shape.

Front

How do you represent a translation of 3 units left and 5 units down algebraically?

Back

(x-3, y-5)

Front

How do you represent a translation of 4 units down algebraically?

Back

(x, y-4)

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 can you conclude about the areas of two congruent figures after a transformation?

Back

Their areas are equal.

Front

What is the line of reflection?

Back

The line of reflection is the line over which a figure is reflected to create a mirror image.