CP Geo Unit 5 Review

Front

What is a translation in geometry?

Back

A translation is a transformation that moves every point of a figure the same distance in the same direction.

Front

How do you reflect a point over the y-axis?

Back

To reflect a point (x, y) over the y-axis, change the sign of the x-coordinate to get (-x, y).

Front

What is the result of reflecting the point (2, -4) over the y-axis?

Back

The result is (-2, -4).

Front

What happens to the coordinates of a point when it is reflected over the y-axis?

Back

The x-coordinate changes sign, while the y-coordinate remains the same.

Front

What is dilation in geometry?

Back

Dilation is a transformation that changes the size of a figure but not its shape, using a scale factor.

Front

If a point (x, y) is dilated with a scale factor k, what are the new coordinates?

Back

The new coordinates are (kx, ky).

Front

What is the effect of a dilation with a scale factor of 1/2 on the point (-10, -6)?

Back

The new coordinates are (-5, -3).

Front

How do you translate a point in the coordinate plane?

Back

To translate a point (x, y), add the translation values to the coordinates: (x + a, y + b), where a is the horizontal shift and b is the vertical shift.

Front

What is the translation of triangle ABC to triangle A'B'C' if it moves left two and up nine?

Back

The translation can be expressed as: (x, y) -> (x - 2, y + 9).

Front

What is a reflection in geometry?

Back

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