Chapter 11: Transformation

Front

What are the four types of transformations?

Back

• Translation, Rotation, Reflection, and Enlargement

Front

What is translation in transformation?

Back

A movement that slides a shape without rotating or flipping it.

Front

Write the coordinates of a point after it is translated by (3,−2).

Back

Add 3 to x-coordinate and subtract 2 from y-coordinate.

Front

How do you describe reflection in transformation?

Back

A flip of a shape over a line of symmetry.

Front

What is the result when a shape is reflected across the y-axis?

Back

The x-coordinate changes its sign, while the y-coordinate remains the same.

Front

Define rotation in transformation.

Back

A circular movement of a shape around a fixed point (center of rotation).

Front

What happens when a shape is rotated 90° clockwise about the origin?

Back

The coordinates (x,y) change to (y,−x).

Front

State the coordinates of (4,2) after a 180° rotation about the origin.

Back

(−4,−2).

Front

What does enlargement mean in transformation?

Back

A transformation that changes the size of a shape but keeps its proportions.

Front

What is the scale factor of enlargement if a shape's size doubles?

Back

Scale factor is 2.