3.1 - 3.3 Test - Reflections, Translations, Rotations

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 line of reflection for the point D(-5, 2) reflected over the line x=4?

Back

The line of reflection is x=4.

Front

What is the arrow rule for translating a point 6 units right and 2 units down?

Back

The arrow rule is (x, y) → (x+6, y-2).

Front

What is the result of reflecting the point D(-6, -3) over the origin?

Back

The result is D'(6, 3).

Front

What is the angle of rotation for a 90° counterclockwise rotation?

Back

The angle of rotation is 90° counterclockwise.

Front

How do you perform a translation in geometry?

Back

A translation moves every point of a figure the same distance in a specified direction.

Front

What is the formula for a 180° rotation about the origin?

Back

The formula is (x, y) → (-x, -y).

Front

What does the term 'transformation' mean in geometry?

Back

A transformation is an operation that moves or changes a shape to create a new shape.

Front

What is the effect of a reflection over the y-axis on the point (3, 4)?

Back

The effect is to change the point to (-3, 4).

Front

What is the effect of a translation of (x, y) by (3, -2)?

Back

The effect is (x, y) → (x+3, y-2).