Week 21 Practice Problems

The second H-shaped polygon is a scaled copy of the first. What scale factor takes the original polygon to its smaller copy?

Figure B is a scaled copy of Figure A.

Select all of the statements that must be true.

• Figure B is larger than Figure A.

• Figure B has the same number of edges as Figure A.

• Figure B has the same perimeter as Figure A.

• Figure B has the same number of angles as Figure A.

• Figure B has angles with the same measures as Figure A.

Polygon B is a scaled copy of Polygon A.

What is the scale factor from Polygon A to Polygon B?

Here is a polygon on a grid.

Draw a scaled copy of this polygon that has a scale factor of 3.

Create a scaled copy of ABCD using a scale factor of 4.

Triangle Z is a scaled copy of Triangle M. Select all sets of values that could be the side lengths of Triangle Z.

• 8, 11, 14

• 10, 17.5, 25

• 6, 9, 11

• 6, 10.5, 15

• 8, 14, 20

Here are two polygons on a grid.

Is PQRST a scaled copy of ABCDE?

• Yes

• No

Select all the statments that must be true for any scaled copy Q of Polygon P.

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

• 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.

• Q has 2 acute angles and 3 obtuse angles.

Here is Quadrilateral ABCD.

Quadrilateral PQRS is a scaled copy of Quadrilateral ABCD. Point P corresponds to A, Q to B, R to C, and S to D.

If the distance from P to R is 3 units, what is the distance from Q to S?

Figure 2 is a scaled copy of Figure 1.

What is the scale factor that takes Figure 1 to Figure 2?