The transformation is a/an ……………, if k = 1, where k is the scale factor of a given size transformation.

1. identity transformation

2. reduction

3. enlargement

4. map

In case of solids, we have volume of the resulting figure = …………… × (volume of the given figure), where k is the scale factor.

1. k

2. k²

3. k³

4. 3k

Let the map of a plane figure be drawn to the scale 1 : p. Then scale factor, k = ……………, length in the map = k × (Actual length).

1. $\dfrac{p}{1}$

2. $\dfrac{1}{p}$

3. $\dfrac{1}{k}$

4. k

Assertion (A) : Two circles are always similar.

Reason (R) : Similar shapes have same shape and size.

1. A is true, R is false

2. A is false, R is true

3. Both A and R are true

4. Both A and R are false