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13 questions
What is a scale copy?
A number you use to multiply all the lengths of the sides in the original figure by to generate a larger or smaller figure
An image of something that has been enlarged or reduce in size but nothing else has changed.
points, segments, and angles that match in two different figures
a picture that changes in size but is not stretched or distorted
What is the definition of Corresponding points?
Two congruent angles
points on different figures that are located in the same position in relation to the figure
two connecting points on a quadrilateral
points that look the same
Which one is NOT a scale copy from the original copy ?
Copy 1
Copy 2
Copy 3
What is the scale factor going from figure ABCDEF to figure STUVWX
3
5
1
1/2
What segment in figure PQRS corresponds to segment AB
PS
QR
RS
PQ
For each scale copy of the original, find the scale factor for each scale copy and explain your reasoning.
Figure 1 has a scale factor of +1. It is a scale copy because it is an A and it is bigger. It also is more narrow than the original.
Figure 2 has a scale factor of 2 so its a scale copy that is double the size of the original figure.
Figure 3 has a scale factor of 3. It is a scale copy because its side lengths are longer than the original and one side of the figure is straight.
Figure 4 has a scale factor of 1/2. Its a scale copy because the sides of the figure have been reduced by 1/2 but nothing else has changed.
A rectangle that is 3 inches by 5 inches has been scaled by a factor of 4.
What are the side lengths of the scaled copy?
15 inches and 25 inches
6 inches and 10 inches
12 inches and 20 inches
1.5 inches and 2.5 inches
To make a batch of cookies, the ratio of cups of flour to cups of sugar is 4 to 2. Which of the following is an equivalent ratio of 4:2?
8:4
2:3
7:4
1:1/2
Select all the statements that must be true for any scaled copy Q of Polygon P.
If the scale factor is 2, each angle in P is multiplied by 2 to get the corresponding angle in Q.
If the scale factor between P and Q is 1/5, then each side length of P is multiplied by 1/5 to get the corresponding side length of Q.
Q has 2 acute angles and 3 obtuse angles.
Q has 2 right angles.
The angle measures are all whole numbers.
Lin has a drawing with an area of 20 inches squared. If she increases all the sides by a scale factor of 4, what will the new area be?
40 inches squared
10 inches squared
320 inches squared
100 inches squared
Here are two polygons on a grid.
Is PQRST a scaled copy of ABCDE? Explain your reasoning.
Yes, PQRST is a scale copy of ABCDE because they have congruent angles.
No, PQRST is not a scale copy of ABCDE because we need to use different scale factors when comparing corresponding lengths.
Yes, PQRST is a scale copy of ABCDE because they have corresponding points and segments.
No, PQRST is not a scale copy of ABCDE because the shape has been stretched and reduced in side creating smaller angles.
Polygon PQRS is a scaled copy of polygon ABCD.
Name the angle in the scaled copy that corresponds to angle ABC.
Angle PQR
Angle QRS
Angle BCD
Angle PSR
Polygon PQRS is a scaled copy of polygon ABCD.
Name the segment in the scaled copy that corresponds to segment AD .
Segment CD
Segment RS
Segment QR
Segment PS
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