Exploring Grade 8 Rational Expressions

What is the center of dilation in the context of triangle D?

• Point B

• Point P

• Point E

• Point A

Tags

CCSS.8.G.A.3

If a triangle has a scale factor less than one, what happens to its size?

• It becomes larger

• It becomes smaller

• It remains the same

• It disappears

Tags

CCSS.8.G.A.3

Why is it important to use precise and concise language when discussing points on a coordinate plane?

• To make the conversation longer

• To ensure clear communication

• To confuse others

• To avoid using numbers

Tags

CCSS.RI.8.7

CCSS.RI.9-10.7

CCSS.RL.6.7

CCSS.RL.7.7

CCSS.RL.9-10.7

During the info gaps activity, what should you do if your partner cannot explain why they need certain information?

• Give them the information anyway

• Ignore their question

• Ask them to think it through more

• Change the topic

What happens to a triangle under a dilation with a scale factor of zero?

• It becomes twice as large

• It becomes a dot at the center of dilation

• It flips over

• It remains unchanged

Tags

CCSS.8.G.A.3

If triangle A is dilated to form triangle B with a scale factor of 2, what is the relationship between their sizes?

• Triangle B is four times the size of triangle A

• Triangle B is the same size as triangle A

• Triangle B is twice the size of triangle A

• Triangle B is half the size of triangle A

Tags

CCSS.8.G.A.3

What are the three pieces of information needed to perform a dilation on a coordinate plane?

• Scale factor, angle, and length

• Center of dilation, angle, and length

• Coordinates, angle, and length

• Coordinates, center of dilation, and scale factor

Tags

CCSS.8.G.A.3

How do you find the center of dilation for a set of triangles?

• By drawing lines through corresponding vertices

• By measuring the sides

• By using a protractor

• By guessing

Tags

CCSS.8.G.A.3

What is the scale factor if a triangle is dilated and becomes smaller?

• Equal to zero

• Less than one

• Equal to one

• Greater than one

Tags

CCSS.8.G.A.3

In the homework problem, if point B moves from (0,0) to (1,3) and then to (2,6), what is the scale factor?

• 1

• 2

• 3

• 4

Tags

CCSS.8.G.A.3