Transformations in Geometry

This video tutorial introduces the concept of transformations, including translations, reflections, rotations, and dilations. It explains key vocabulary such as pre-image and image, and details the properties of each transformation type. The video also covers the rules for translating shapes on a graph and provides practice problems to reinforce learning.

What is the term for the original figure before any transformation?

• Prime

• Isometry

• Pre-image

• Image

Which symbol is used to denote the image after a transformation?

• Tilde

• Asterisk

• Prime

• Hash

What is another term for a translation?

• Flip

• Slide

• Spin

• Enlarge

Which transformation involves flipping a shape over a line?

• Dilation

• Reflection

• Translation

• Rotation

What type of transformation is a 90-degree counterclockwise turn?

• Dilation

• Rotation

• Reflection

• Translation

Which transformation can change the size of a shape?

• Reflection

• Dilation

• Translation

• Rotation

What is the term for transformations that keep the shape congruent?

• Translations

• Dilations

• Isometries

• Reflections

Which transformation involves a line of reflection?

• Dilation

• Rotation

• Reflection

• Translation

What is the effect of a dilation on a shape's congruency?

• It rotates

• It flips

• It becomes non-congruent

• It remains congruent

Which transformation is not considered a rigid transformation?

• Translation

• Reflection

• Dilation

• Rotation