Geometry Topic

A rectangle is dilated by a scale factor of 3. If the original rectangle had dimensions 2 units by 4 units, what are the dimensions of the dilated rectangle?

• 6 units by 12 units

• 5 units by 10 units

• 6 units by 8 units

• 3 units by 6 units

Check all that apply. Which transformation below are considered rigid transformations?

• Translation

• Rotation

• Dilation

• Reflection

Which transformation is NOT a rigid motion (the size changes)?

• reflection

• rotation

• dilation

• translation

Definition: The figure before a transformation has occurred. 

• Pre-image

• Image

• Translation

• Reflection

Definition: The figure after a transformation has occurred. 

• Pre-image

• Image

• Translation

• Reflection

A dilation is which of the following: 

• only an enlargement

• only a reduction

• either an enlargement or a reduction

• neither an enlargement nor a reduction

A dilation always produces a similar figure. Similar figures have the same ______ but different ______. 

• measure; shapes

• sizes; shapes

• value; measures

• shape; sizes

When the scale factor of a dilation is less than one, the dilation is a...

• Reduction

• Enlargement

State the coordinate of the image of the given point B (-10,-6) under a dilation with center at the origin with the given scale factor k = 1/2.

• (5,3)

• (20,12)

• (-20,-12)

• (-5,-3)

Translations, reflections and rotations are all known as ________________________.

• Geometry

• Rigid Transformations

• Congruent

• Non- Rigid Transformations