What's the Scale?
Vocabulary
What is the missing side length?
Which is the Scaled Copy?
Reverse it
100
Figure A has a perimeter of 9. Figure B has a perimeter of 27. What is the scale factor from A to B?
3
100
The definition of perimeter
The distance around the outside of the shape
100
The value of the unknown side length x is ...
x = 7
100
A triangle has the side lengths of 8, 12, 22. Of the following, which side lengths below would create a scaled copy...
A. 4, 6, 11 B. 6, 9, 16 C. 12, 17, 30
A 4, 6, 11?
100
The scale factor from Figure A to Figure B is 4. What is the scale factor that takes Figure B back to Figure A?
Question 5, 1.04
1/4 of 0.25
200
Figure A has a perimeter of 12. Figure B has a perimeter of 18. What is the scale factor from A to B?
18/12 or 3/2 or 1.5
200
The definition of area and how it is measured.
The amount of space inside a figure, measured in square units.
200
The value of the unknown side length x is ...
What is x = 2.5?
200
A triangle has the side lengths of 8, 9, 15. Of the following, which side lengths below would NOT create a scaled copy...
A. 16, 18, 25 B. 4, 4.5, 7.5 C. 16, 18, 30
A
200
The scale factor from Figure A to Figure B is 1/2. What is the scale factor that takes Figure B back to Figure A?
Question 5, 1.04
2
300
Figure A has a perimeter of 30. Figure B has a perimeter of 12. What is the scale factor from A to B?
12/30 or 2/5 or .4
300
Definition of scale factor
The factor by which every side length in an original figure is multiplied by to create a scaled copy
300
The value of the unknown side length ? is ...
What is ? = 20?
300
A triangle has the side lengths of 4, 5, 6. Of the following, which side lengths below would create a scaled copy...
A. 1, 1.25, 7.5 B. 8, 10, 12 C. 2, 2.5, 3.25
B
300
The scale factor from Figure A to Figure B is 3/5. What is the scale factor that takes Figure B back to Figure A?
Question 5, 1.04
5/3
400
The scale factor from triangle DEF to triangle D`E`F`is ...
1.5 c
400
What is the ratio that can be used to find scale factor?
The ratio of the length on the scaled copy to the length on the original copy
400
The value of the unknown side length ? is ...
What is ? = 7.2?
400
A triangle has the side lengths of 2, 4, 7. Of the following, which side lengths below would create a scaled copy...
A 1, 2, 3 B 1.5, 3, 5.25 C 2.5, 5, 8.5
B 1.5, 3, 5.25?
400
The scale factor from Figure A to Figure B is 3.5. What is the scale factor that takes Figure B back to Figure A?
Question 5, 1.04
2/7