scale factors
A side measuring 5 units becomes 20 units. What scale factor was used?
4
True or false: A scaled copy must always be larger than the original figure.
False
A polygon has a perimeter of 42 units. It is copied using a scale factor of 1. What is the new perimeter?
42
A drawing uses the scale 1 cm = 25 cm. What actual distance is represented by 4 centimeters?
100 cm
how old is Ms. Lockwood
We will never know
The scale factor from Figure A to Figure B is 5/3. What is the scale factor from B back to A?
3/5
Quadrilateral A has side lengths 3, 4, 6, and 8. Quadrilateral B has side lengths 6, 8, 12, and 15. Are they scaled copies? Explain.
No, scale factor not consistent
A figure is enlarged using a scale factor of 3. How many times as large is the new area?
9
A road is 40 meters long. On a scale drawing, 1 cm = 10 m. How long should the road be on the drawing?
4 cm
What is Ms. Lockwood's dog's name
Norman
Quadrilateral A has side lengths 5, 10, 15, and 20. Quadrilateral B has side lengths 2.5, 5, 7.5, and 10. Are they scaled copies? If so, give the scale factor from A to B.
Yes, 1/2
Name two features that stay the same when a figure is made into a scaled copy.
Same angle measurements and same number of sides/angles
A rectangle has a base of 2 units and a height of 3 units. Its scaled copy has an area 24 of square units. What scale factor was used?
2
A quadrilateral has side lengths 2, 3, 4, and 5 units. A scaled copy has a shortest side of 4 units. Find the scale factor, the new side lengths, and the new perimeter.
Scale factor: 2; new sides: 4, 6, 8, and 10 units; new perimeter: 28 units.
What sport does Ms. Lockwood play
Soccer