Test Review Unit 1 - Lesson 1-6

Line CB corresponds with what line? 

• SR

• PQ

• SP

• RQ

Answer explanation

Line CB corresponds with line RQ because they are parallel lines in the given geometric configuration, maintaining equal distance and never intersecting.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Is Figure B a scaled copy of Figure A?

• Yes

• No

Answer explanation

Yes, Figure B is a scaled copy of Figure A because it maintains the same shape and proportions, differing only in size. This confirms that the two figures are similar, fulfilling the criteria for being scaled copies.

Tags

CCSS.4.G.A.3

Is Figure B a scaled copy of Figure A?

• Yes

• No

Answer explanation

Figure B is not a scaled copy of Figure A because the proportions or dimensions do not match. A scaled copy must maintain the same shape and ratio, which is not the case here.

Tags

CCSS.8.G.A.3

What is the scale factor from ΔABC to ΔDEF?

• 1/2

• 7/3

• 2

• 10/3

Answer explanation

The scale factor from ΔABC to ΔDEF is determined by comparing corresponding side lengths. If the sides of ΔDEF are twice as long as those of ΔABC, the scale factor is 2, making the correct answer 2.

Tags

CCSS.HSG.SRT.A.2

CCSS.8.G.A.4

If a scale factor is LESS THAN ONE, the new figure will be ___________________ .

• an enlargement

• a reduction

• none of these

• the same size

Answer explanation

If a scale factor is less than one, it means the dimensions of the figure are being reduced. Therefore, the new figure will be a reduction, not an enlargement or the same size.

Tags

CCSS.8.G.A.3

Scale Factor of 5 is _________________ .

• Reduction

• Enlargement

Answer explanation

A scale factor of 5 means that the size of the object is increased by 5 times its original dimensions. This is known as enlargement, as opposed to reduction, which would decrease the size.

Tags

CCSS.8.G.A.3

Scale Factor of 0.80 is ________________ .

• Reduction

• Enlargement

Answer explanation

A scale factor of 0.80 indicates that the size is being reduced to 80% of the original. Therefore, it represents a reduction, not an enlargement.

Tags

CCSS.8.G.A.3

Is Figure B a scaled copy of Figure A?

• Yes

• No

Answer explanation

Yes, Figure B is a scaled copy of Figure A because it maintains the same shape and proportions, just resized. This confirms that the two figures are similar, fulfilling the criteria for being scaled copies.

Tags

CCSS.8.G.A.3

Which figures are scaled copies of the original?

• Figure 1

• Figure 2

• Figure 3

• Figure 4

Answer explanation

Figure 3 is a scaled copy of the original because it maintains the same shape and proportions, just resized. The other figures do not preserve these characteristics, making them not scaled copies.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Which of the following figures is a scaled copy of Figure A?

• 
• 
• 

Tags

CCSS.8.G.A.3