Chapter 4 Transformation Test

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 happens to the coordinates of a point (x, y) when it is reflected across the y-axis?

Back

The coordinates become (-x, y).

Front

What happens to the coordinates of a point (x, y) when it is reflected across the x-axis?

Back

The coordinates become (x, -y).

Front

What is the notation for a translation that moves a point 4 units to the left and 1 unit up?

Back

(x, y) → (x - 4, y + 1).

Front

What type of transformation is a rotation?

Back

A rotation is a transformation that turns a figure around a fixed point.

Front

What is the effect of a dilation by a factor of 2 on a point (x, y)?

Back

The new coordinates become (2x, 2y).

Front

What is the definition of a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to produce a new shape.

Front

What is the difference between a translation and a reflection?

Back

A translation moves a shape without changing its orientation, while a reflection flips it over a line.

Front

If a triangle is reflected across the y-axis, what happens to its orientation?

Back

The orientation of the triangle is reversed.

Front

What is the result of reflecting the point (3, 5) across the y-axis?

Back

The new coordinates are (-3, 5).