Effects of Dilation on Shapes

This video tutorial covers the concept of dilations in geometry, explaining how shapes can be enlarged or reduced while maintaining their proportions. It discusses the center of dilation, the scale factor, and how to identify dilations. The video also provides examples of dilations with both positive and negative scale factors, illustrating the effects on the shape's size and orientation.

What is the primary effect of a dilation on a geometric shape?

• It does not change the shape or size.

• It changes the shape but not the size.

• It changes the size but not the shape.

• It changes the shape and size.

In geometry, what does a dilation do to a shape?

• Makes it larger or smaller while keeping it similar.

• Changes its angles but not its sides.

• Transforms it into a different shape.

• Alters its perimeter but not its area.

Which of the following is NOT a characteristic of a dilation?

• The shape remains similar.

• The size changes.

• The angles change.

• The proportions remain constant.

What is the effect of a dilation on the angles of a shape?

• The angles increase.

• The angles remain the same.

• The angles are flipped.

• The angles decrease.

What is the effect of a dilation on the perimeter of a shape?

• The perimeter is flipped.

• The perimeter remains the same.

• The perimeter decreases.

• The perimeter increases.

What is the effect of a dilation on the area of a shape?

• The area decreases.

• The area is flipped.

• The area increases.

• The area remains the same.

What is the effect of a dilation on the similarity of a shape?

• The shape remains similar.

• The shape becomes less similar.

• The shape becomes more similar.

• The shape becomes dissimilar.

What is the effect of a dilation on the shape's dimensions?

• The dimensions decrease.

• The dimensions are flipped.

• The dimensions increase.

• The dimensions remain the same.

What is the effect of a dilation on the shape's proportions?

• The proportions increase.

• The proportions remain the same.

• The proportions decrease.

• The proportions change.

What is the effect of a dilation on the shape's orientation?

• The orientation is flipped.

• The orientation remains the same.

• The orientation changes.

• The orientation is rotated.