Transformations in Geometry

The lesson introduces geometric transformations, including translations, reflections, and rotations, using a screen door analogy. It explains how to reflect points across the y-axis and translate shapes on a grid, providing practical examples with ordered pairs.

What are the three types of transformations discussed in the lesson?

• Reflections, Dilations, Rotations

• Translations, Dilations, Rotations

• Translations, Reflections, Rotations

• Translations, Reflections, Dilations

How is a transformation similar to a screen door?

• Both can be opened and closed

• Both are made of metal

• Both are used for security

• Both have hinges, a screen, and a handle

What does the screen in the screen door analogy represent?

• Dilation

• Translation

• Rotation

• Reflection

What shape is formed by plotting the ordered pairs -2, 15, 2, and -3, 5?

• Triangle

• Circle

• Square

• Rectangle

When reflecting across the y-axis, which coordinate changes?

• X-coordinate

• Y-coordinate

• Neither coordinate

• Both coordinates

What happens to the y-coordinate when reflecting across the x-axis?

• It remains the same

• It doubles

• It becomes zero

• It changes sign

What is the first step in translating a shape?

• Erasing the original shape

• Plotting the original points

• Changing the color

• Drawing a new shape

How many units is the trapezoid moved to the right during translation?

• Two units

• Three units

• Four units

• Five units

What additional concept will be practiced after translating and reflecting?

• Rotation

• Scaling

• Dilation

• Shearing