7+ Unit 4 Flashcard Study Guide: Rigid Transformations

Front

What is a rigid transformation?

Back

A transformation that preserves the shape and size of a figure, including translations, rotations, and reflections.

Front

Define translation in geometry.

Back

A transformation that moves every point of a figure the same distance in a given direction.

Front

What does it mean to reflect a figure?

Back

To flip a figure over a line of symmetry, creating a mirror image.

Front

What is a rotation in geometry?

Back

A transformation that turns a figure about a fixed point at a certain angle and direction.

Front

How do you translate a point (x, y) 3 units left and 2 units down?

Back

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

Front

What is the result of rotating a point (2, 3) 90 degrees clockwise about the origin?

Back

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

Front

What is the line of symmetry?

Back

A line that divides a figure into two mirror-image halves.

Front

If triangle ABC is translated left 2 and up 9, what are the new coordinates of point A (3, 4)?

Back

The new coordinates will be (1, 13).

Front

What is the difference between rotation and reflection?

Back

Rotation turns a figure around a point, while reflection flips it over a line.

Front

What is dilation in geometry?

Back

A transformation that changes the size of a figure but not its shape.