8th - Unit 1 Lesson 3

Front

What is a transformation in geometry?

Back

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

Front

What are the three main types of transformations?

Back

The three main types of transformations are translations, reflections, and rotations.

Front

Define translation in geometry.

Back

Translation is a transformation that slides a shape a certain distance in a specified direction.

Front

What does it mean to reflect a shape?

Back

To reflect a shape means to flip it over a line or axis, creating a mirror image.

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a shape around a fixed point, called the center of rotation.

Front

What is the result of a reflection across the y-axis?

Back

The x-coordinates of the points of the shape change sign, while the y-coordinates remain the same.

Front

What happens to a shape during a 90-degree clockwise rotation?

Back

The coordinates of each point are transformed as follows: (x, y) becomes (y, -x).

Front

What is the difference between a translation and a reflection?

Back

A translation slides a shape without changing its orientation, while a reflection flips it over an axis.

Front

What is the term for moving a shape without changing its size or shape?

Back

Transformation.

Front

How do you identify a translation on a graph?

Back

A translation can be identified by observing that all points of the shape move the same distance in the same direction.