Scale Factor
Vocabulary
X =
Corresponding Sides & Angles
Vocabulary
100
What is the scale factor from the small fry to the large fry?
3
100
What is the ratio of the length in a drawing (or model) to the length on the real thing?
Scale Factor
100
If the scale factor is 4, what is the measurement of x?
24m
100
The side CB corresponds to the side ___
ZY
100
What is how much something is per one unit of something else?
Unit Rate
200
Using the scale factor, what is the value of x?
20
200
What shows a real object with accurate sizes reduced or enlarged by a certain amount?
Scaled Drawing
200
The value of the unknown side length x is ...
7
200
The side AB corresponds to the side _______
XY
200
What says that two ratios (or fractions) are equal?
Proportions
300
What is the Scale Factor from triangle DEF to triangle D'E'F'?
1.5cm
300
What is a physical model which is geometrically similar to an object?
Scale Model
300
The value of the unknown side length, ? is ...
?=20
300
Which angle corresponds with ∠X?
∠E
300
What is when one shape can become another after a resize, flip, slide or turn?
Similar Figures
400
What is the Scale Factor from triangle ABC to triangle DEF?
1/2
400
The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k=y/x
Constant of Proportionality
400
The value of the unknown side length ? is ...
? = 7.2
400
Mr. Lloyd wants to build a doll house for his daughter that is proportional to their house. He measured the living room of his house and it is 12 ft by 16 feet. What will be the dimensions of the doll house living room if every foot of the actual house is equal to one half inch in the doll house?
6 inches by 8 inches
400
What is a relationship where two quantities can be expressed as multiples of each other?
Multiplicative Relationships
500
A flagpole and a model flag pole have a scale factor of 1 in.= 4 ft. If the model pole measures 12 inches, how tall is the pole in feet?
48ft
500
What is a type of proportionality in which one quantity directly varies with respect to a change in another quantity, by the same factor?
Direct Variation
500
Use the similar triangles below to find the height of the tree.
44ft
500
What are corresponding angles or side measures on the original compared to the scaled model are...?
the same (equivalent or equal)
500
What is it if the radius of a circle or the side length of a square is changed, the size of the entire figure changes proportionally?
Changing Dimensions Proportionally