Exploring Dilation Concepts

The video tutorial covers the concept of dilations, a type of transformation that changes the size of a figure, making it similar but not congruent to the original. It begins with an overview of transformations, followed by real-life examples of dilations, particularly in ophthalmology. The tutorial then delves into the mathematics of dilations, explaining scale factors and providing examples of enlargements and reductions. Students are encouraged to take notes and submit them for extra credit.

What transformation type does not produce congruent figures?

• Dilation

• Rotation

• Reflection

• Translation

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

What is the study of eyes called?

• Neurology

• Dermatology

• Ophthalmology

• Cardiology

What happens to the pupil in bright sunlight?

• It dilates

• It becomes square

• It remains unchanged

• It reduces

Tags

CCSS.8.G.A.3

What does a scale factor greater than 1 indicate?

• Reduction

• No change

• Enlargement

• Rotation

Tags

CCSS.8.G.A.3

What remains unchanged in a dilation?

• Size

• Shape

• Color

• Position

Tags

CCSS.8.G.A.3

What is true about the angles in a dilation?

• They reduce in size

• They become obtuse

• They become right angles

• They remain the same

Tags

CCSS.8.G.A.3

How do you calculate the new side length in an enlargement?

• Subtract the scale factor

• Multiply by the scale factor

• Divide by the scale factor

• Add the scale factor

Tags

CCSS.8.G.A.3

What is the scale factor for a reduction from 15 to 3?

• 15/3

• 1/5

• 5

• 3/15

Tags

CCSS.8.G.A.3

What does a scale factor of 1/3 indicate?

• Enlargement

• Reduction

• No change

• Rotation

Tags

CCSS.8.G.A.3

What is necessary to calculate the new size in a dilation?

• Original color

• Scale factor

• Number of sides

• Original position

Tags

CCSS.8.G.A.3