Definitions
Ratios/Similar figures
Find the scale factor
Area
Other
100
What is a scale factor?
A number that tells us how many times smaller or bigger a scale drawing is than the original
100
There are 2 girls for every 3 boys at PV. If the school has 372 boys, how many girls are at PV?
248 girls
100
Holt Crossing is 500 feet by 1000 feet and PV is 1000 feet by 2000 feet. How much bigger is PV?
2 times bigger
100
A floor plan of a house was drawn using a scale of 1 cm = 1.5 m. The family room in the plan is pictured as 5 cm by 4 cm. In square meters, what is the actual area of the family room?
45 feet2
100
7.5
200
What are similar figures?
two images that are the same shape but not necessarily the same size
200
Miss Greene claims that her circular pizza and her clock are similar. Is she correct? Why?
She is correct because her pizza and clock are both perfect circles and all circles are similar to each other
200
A painting of George Washington is 30.25 in by 25.25 in. The museum made a post card of the painting that measures 6.05 in by 5.05 in. The post card is what fraction of the original painting?
1/5
200
You have a scale drawing of your new classroom. Your drawing has a scale of 1 inch=5 feet in real life. your scale drawing is 3.2 in by 4.3in. Find the area of your new classroom in real life.
344 feet2
200
What Room number are we in right now?
2304/2306
300
images that have a scale factor are said to be...
proportional
300
Are all triangles similar why or why not?
No they are not because there are different types of triangles so they can not be similar
300
Find the scale factor
3
300
After making several scale drawings, Joseph decides on the best placement for a new grill on his deck. He uses a scale of 2 cm for every 5 in. If the grill space measures 10 cm by 18 cm, what is the actual area of the space for Joseph’s new grill in square inches?
1125 in2
300
What is our mascot at PV?
panthers
400
What is a scale drawing?
images that are stretched or shrunk in a way that does not distort the image
400
At PV there are 16.25 students for every 1 adult. If there are 52 adults how many students are there?
845 students
400
On a map the distance from PV to Norton is 3.25 inches. When the football team drove to Norton for their game the bus driver told Mr. Matheny that it was actually 13 miles. What is the scale used to create the map?
1 inch = 4 miles
400
What are the steps to using scale factor to find area?
scale the sides first then find the area
400
How much is rent and utilities on class equity?
$125
500
Explain the word distorted and how it applies to scale factor
Distorted figures change the image in a way that makes it not similar and a scale factor does not apply
500
Draw and label the side lengths of two similar rectangles
answers vary
500
A toy car is 5 inches long. The real car it is based off of is 6.3 feet. How much smaller is the toy car?
1.26
500
Johnny scaled a 4cm by 5cm rectangle by 2 and needed to find the area. He reported that the area was 40 is he correct? why or why not?
He is not correct because he took the area of the original rectangle and then used the scale factor on that. He should have scaled the sides first then taken the area
500
What have we been studying in Math this year?
Scale Factor