Translations and Reflections

Front

What are congruent geometric figures?

Back

Congruent geometric figures have the same size and same shape.

Front

What is the algebraic representation for reflecting a figure over the y-axis?

Back

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

Front

What happens when you translate a figure on the coordinate plane?

Back

You slide it.

Front

What is the algebraic representation for reflecting a figure over the x-axis?

Back

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

Front

What do you do to the coordinates when translating a figure?

Back

You add or subtract a number to x and y.

Front

What is a translation in geometry?

Back

A translation is a transformation that slides a figure to a new position without changing its size or 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 the line of reflection for a reflection across the x-axis?

Back

The x-axis itself.

Front

What is the line of reflection for a reflection across the y-axis?

Back

The y-axis itself.

Front

If a point A(2, 3) is reflected over the y-axis, what are the coordinates of the reflected point?

Back

A'(-2, 3)