KAP Transformations and Proportionality Review (Test 2-1)

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a figure but not its shape. It involves a center point and a scale factor.

Front

What is the only operation ever used with dilation?

Back

Multiplication

Front

What does the transformation (x, y) --> (x + 2, y - 3) represent?

Back

This transformation represents a slide right 2 units and down 3 units.

Front

What is a transformation?

Back

A transformation is an operation that moves or changes a shape in some way, such as translation, rotation, reflection, or dilation.

Front

What is the difference between translation and reflection?

Back

Translation moves a shape without changing its orientation, while reflection flips a shape over a line.

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

If a figure is reflected over the y-axis, what happens to its coordinates?

Back

The x-coordinates of the points change sign, while the y-coordinates remain the same.

Front

What is the scale factor in dilation?

Back

The scale factor is a number that describes how much a figure is enlarged or reduced during dilation.

Front

How do you identify corresponding sides in similar triangles?

Back

Corresponding sides in similar triangles are the sides that are in the same relative position in each triangle.

Front

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

Back

A scale factor greater than 1 enlarges the figure.