Thursday Practice - 10/1 Finding Lengths using Scale Drawing

Thursday Practice - 10/1 Finding Lengths using Scale Drawing

Please complete this entire Practice to prepare for your test tomorrow.

Reminders:

• The Scale Factor is represented as "K"

• The Scale Factor is the number you multiply between 2 similar scaled copies

• If your scaled copy gets LARGER from the original your SCALE FACTOR will be GREATER than 1

• If your scaled copy gets SMALLER from the original your SCALE FACTOR will be LESS than 1 (basically a fraction)

MORE Reminders:

• To find a missing corresponding side length of a Scaled Copy figure, you must:

• Find the Scale Factor

• Use the Scale Factor to multiply the given corresponding side length to get the missing length

• 
  

Let's do some Practice!!!!

Multiple Select

Which

figures are scaled copies of the original A?

• Figure 1

• Figure 2

• Figure 3

• Figure 4

Multiple Choice

Tyler says that Figure B is a scaled copy of Figure A because all of the peaks are half as

tall. Is this True or False?

• True

• False

Multiple Select

Click on the picture

Multiple Select

Figure B is a scaled copy of Figure A. Select all of the statements that must be true:

• Figure B is larger than Figure A.

• Figure B has the same number of edges as Figure A.

• Figure B has the same perimeter as Figure A.

• Figure B has the same number of angles as Figure A.

• Figure B has angles with the same measures as Figure A.

Multiple Choice

What is the scale factor from Polygon A to

Polygon B?

• 2.5

• 2

• 1/2

• 2/5

Fill in the Blank

Find the missing length of the side marked

with "A" in Polygon B.

Multiple Choice

If an original polygon has a scale factor of 2. Did the new scaled copy get larger or smaller?

• Larger

• Smaller

Multiple Choice

If an original polygon has a scale factor of 1/2. Did the new scaled copy get larger or smaller?

• Larger

• Smaller

Multiple Choice

If an original polygon has a scale factor of 3/2. Did the new scaled copy get larger or smaller?

• Larger

• Smaller

Multiple Choice

Priya and Tyler are discussing the figures shown below. Priya thinks that B, C, and D are

scaled copies of A. Tyler says D is the only scaled copy of A. Who is correct?

• Priya

• Tyler

Multiple Choice

If a scaled copy is LARGER than the original copy then the scale factor is:

• Greater than 1

• Less than 1

• Equal to 1

Multiple Choice

If a scaled copy is SMALLER than the original copy then the Scale Factor is:

• Greater than 1

• Less than 1

• Equal to 1

Multiple Choice

If a scaled copy is CONGRUENT to the original copy then the Scale Factor is:

• Greater than 1

• Less than 1

• Equal to 1