IM 7.1.2 Practice: Corresponding Parts and Scale Factors

The second H-shaped polygon is a scaled copy of the first. Show one pair of corresponding points and two pairs of corresponding sides in the original polygon and its copy. Consider labeling corresponding parts or some of the vertices.

What scale factor takes the original polygon to its smaller copy? Explain or show your reasoning.[br]

Figure B is a scaled copy of Figure A. Select [b]all [/b]of the statements that must be true:

Figure B has angles with the same measures 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 is larger than Figure A. Figure B has the same number of edges as Figure A.

Polygon B is a scaled copy of Polygon A.

What is the scale factor from Polygon A to Polygon B? Explain your reasoning.

Find the missing length of each side marked with ? in Polygon B.

Determine the measure of each angle marked with ? in Polygon A.

Complete each equation with a number that makes it true.

[math]8\cdot\text{______}=40[/math]

[math]8+\text{______}=40[/math]

[math]21\div\text{______}=7[/math]

[math]21-\text{______}=7[/math]

[math]21\cdot\text{______}=7[/math]

Information: IM 7.1.2 Practice: Corresponding Parts and Scale Factors