Geo- Unit 3 Test Warm-up

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What does it mean to reflect a point across the y-axis?

Back

To reflect a point across the y-axis, you change the sign of the x-coordinate while keeping the y-coordinate the same.

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a figure around a fixed point, called the center of rotation.

Front

What does it mean to rotate a figure 90 degrees clockwise?

Back

To rotate a figure 90 degrees clockwise means to turn it to the right, so that the top of the figure moves to the right.

Front

What is the ordered pair for a point reflected over the y-axis?

Back

If the original point is (x, y), the reflected point is (-x, y).

Front

What is a translation in geometry?

Back

A translation is a transformation that slides a figure from one position to another without changing its shape or orientation.

Front

What does it mean to translate a figure 5 units down?

Back

To translate a figure 5 units down means to move every point of the figure 5 units in the negative y-direction.

Front

What is the difference between rotation and reflection?

Back

Rotation turns a figure around a point, while reflection flips it over a line.

Front

What is a dilation in geometry?

Back

A dilation is a transformation that changes the size of a figure but keeps its shape the same.

Front

What does it mean to rotate a figure 180 degrees about the origin?

Back

To rotate a figure 180 degrees about the origin means to turn it halfway around, resulting in the opposite position.