Unit 3 Transformations

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, called the image.

Front

What are the four main types of transformations?

Back

The four main types of transformations are translation, rotation, reflection, and dilation.

Front

Define translation in geometry.

Back

Translation is a transformation that moves every point of a shape the same distance in a given direction.

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, by a certain angle.

Front

Define reflection in geometry.

Back

Reflection is a transformation that flips a shape over a line, creating a mirror image.

Front

What is the line of symmetry?

Back

A line of symmetry is a line that divides a shape into two identical parts that are mirror images of each other.

Front

How do you determine the angle of rotation?

Back

The angle of rotation is determined by how far a shape is turned around a fixed point, measured in degrees.

Front

What does it mean to translate a shape 'right two, down five'?

Back

It means to move the shape 2 units to the right and 5 units down on the coordinate plane.

Front

What is the result of reflecting a shape across the y-axis?

Back

Reflecting a shape across the y-axis flips it horizontally, changing the sign of the x-coordinates of its points.

Front

How do you find the coordinates of a point after translation?

Back

To find the new coordinates, add the translation values to the original coordinates.