Unit 1: Scale Drawings

• ? = 1/3

• ? = 1.5

•  ? = 2

• ? = 3

• ? = 1/3

• ? = 4

• ? = 3

• ? = 1/4

Which figures are scaled copies of the original figure?

• Figures 2 & 4

• Figures 1, 2, & 4

• Figures 1 & 3

• Figures 1 & 4

If triangle ABC is the original copy and triangle is DEF is a scaled copy, what is the scale factor from the original copy to the scaled copy?

• scale factor is 3

• scale factor is 1/3

• scale factor is 1.5

• scale factor is 1/2

Polygon PQRS is a scaled copy of polygon ABCD.

What is the angle in the scaled copy that corresponds to angle ABC?

• angle ADC

• angle QRS

• angle SPQ

• angle PQR

Polygon PQRS is a scaled copy of polygon ABCD.

What is the name the segment in the scaled copy that corresponds to segment CD.

• segment PQ

• segment RS

• segment BC

• segment QR

Polygon PQRS is a scaled copy of polygon ABCD.

What is the scale factor from polygon PQRS to polygon ABCD?

• scale factor = 2

• scale factor = 0.5

• scale factor = 1/3

• scale factor = 2/3

Triangle Z is a scaled copy of Triangle M. 

Select ALL THE SETS of values that could be the side lengths of Triangle Z.

• 8, 11, and 14

• 10, 17.5, and 25

• 6, 9, and 11

• 6, 10.5, and 15

• 8, 14, and 20

Figure A is the original copy. Which figure is a scaled copy of Figure A?

• Figure B

• Figure D

• Figure C

• none of the above

Select all the statements that must be TRUE for any scaled copy Q of Polygon P.

• The side lengths are all whole numbers.

• The angle measures are all whole numbers.

• Q has exactly 1 right angle.

• If the scale factor is 2, each angle in P is multiplied by 2 to get the corresponding angle in Q.