Unit 1 practice (7th Grade)

Front

What is a scaled copy?

Back

A scaled copy is a shape that is the same shape but different in size compared to the original.

Front

What does scale factor mean?

Back

The scale factor is the ratio of the lengths of two corresponding sides of two similar figures.

Front

If the scale factor is 4, what does that mean?

Back

It means that the dimensions of the scaled copy are 4 times larger than the original figure.

Front

Is Figure B a scaled copy of Figure A if they have the same shape but different sizes?

Back

Yes, if they have the same shape but different sizes, then Figure B is a scaled copy of Figure A.

Front

What is the scale factor if Figure A has a length of 2 and Figure B has a length of 8?

Back

The scale factor is 4 (8 divided by 2).

Front

Can two figures be scaled copies if they have different shapes?

Back

No, two figures cannot be scaled copies if they have different shapes.

Front

What is the relationship between corresponding angles in scaled copies?

Back

Corresponding angles in scaled copies are equal.

Front

If a figure is enlarged by a scale factor of 0.25, what happens to its size?

Back

The figure is reduced to a quarter of its original size.

Front

What is an example of a scale factor of 5?

Back

If a triangle has sides of 2 cm, a scaled copy with a scale factor of 5 will have sides of 10 cm.

Front

If Figure C is a scaled copy of Figure D, what can we say about their perimeters?

Back

The perimeter of Figure C will be the scale factor times the perimeter of Figure D.