Identifying Transformations (Pre-Assessment)

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 are the three main types of transformations?

Back

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

Front

Define translation in geometry.

Back

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

Front

What is a rotation?

Back

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

Front

Define reflection in geometry.

Back

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

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a shape during a transformation.

Front

How do you find the scale factor between two similar shapes?

Back

To find the scale factor, divide the length of a side of the larger shape by the corresponding side of the smaller shape.

Front

What does it mean to rotate a shape 90° counterclockwise?

Back

Rotating a shape 90° counterclockwise means turning the shape 90 degrees to the left around a fixed point.

Front

What is the result of reflecting a shape over the x-axis?

Back

Reflecting a shape over the x-axis flips it vertically, changing the sign of the y-coordinates.

Front

What happens to the coordinates of a point (x, y) when it is translated 3 units right and 2 units down?

Back

The new coordinates will be (x + 3, y - 2).