DOL Monday 11.18: Transformations Introduction

Front

What does it mean for two shapes to be congruent?

Back

Two shapes are congruent if they have the same size and the same shape.

Front

What is a geometric transformation that changes the size of a shape but not its shape?

Back

Dilation.

Front

What is the term for the original figure before a transformation is applied?

Back

Pre-Image.

Front

What is another term for a rotation in geometry?

Back

Turn.

Front

What is a reflection in geometry?

Back

A transformation that flips a figure over a line, creating a mirror image.

Front

What is the term for a transformation that moves a shape without changing its size or shape?

Back

Translation.

Front

What is the line called over which a figure is reflected?

Back

Line of reflection.

Front

What is the result of a rotation of 90 degrees counterclockwise about the origin?

Back

The coordinates of the points are transformed according to the rule (x, y) -> (-y, x).

Front

What is the difference between a rotation and a reflection?

Back

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

Front

What is the effect of a dilation with a scale factor greater than 1?

Back

The figure enlarges.