Geometry Flashcard: Unit 1

Front

What is a transformation that 'turns' a figure about a fixed point at a given angle and direction?

Back

Rotation

Front

What is the type of dilation when the scale factor k=1/4?

Back

Reduction

Front

What do we call a dilation with a scale factor greater than 1?

Back

Enlargement

Front

What is the type of dilation for the scale factor k=5/2?

Back

Enlargement

Front

What transformation occurs from ABC to A'B'C' if it is a reflection across the y-axis?

Back

Reflection across the y-axis

Front

What is the definition of reflection in geometry?

Back

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

Front

What is the definition of translation in geometry?

Back

A transformation that slides a figure from one position to another without turning it.

Front

What is the definition of dilation in geometry?

Back

A transformation that alters the size of a figure but maintains its shape.

Front

What is the scale factor in a dilation?

Back

The ratio of the size of the image to the size of the original figure.

Front

What is an isometry in geometry?

Back

A transformation that preserves distances and angles, resulting in congruent figures.