Unit 2B Midterm 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 a specified direction.

Front

How do you represent a translation mathematically?

Back

A translation can be represented as (x, y) -> (x + a, y + b), where 'a' is the horizontal shift and 'b' is the vertical shift.

Front

What happens to the coordinates of a point (x, y) when it is translated 5 units left and 1 unit up?

Back

The new coordinates will be (x - 5, y + 1).

Front

What is the effect of translating a point (x, y + 6)?

Back

The point moves 6 units 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 is the rule for reflecting a point across the y-axis?

Back

The rule is (x, y) -> (-x, y).

Front

What is the rule for reflecting a point across the x-axis?

Back

The rule is (x, y) -> (x, -y).

Front

What is the rule for reflecting a point across the line y = x?

Back

The rule is (x, y) -> (y, x).

Front

What is the rule for reflecting a point across the line y = -x?

Back

The rule is (x, y) -> (-y, -x).

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.