Unit 1 Lesson 1-6 Assessment

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