Rigid Motions 1

Front

What is a rigid motion?

Back

A transformation that preserves size and shape.

Front

What happens to a point (x, y) when it is translated 2 units right and 3 units down?

Back

(x + 2, y - 3)

Front

If point X is at (1, -2) and is translated 3 units left and 9 units down, what are the new coordinates?

Back

(-2, -11)

Front

What is the result of rotating a point (x, y) 90° counterclockwise around the origin?

Back

(-y, x)

Front

What is the result of rotating a point (x, y) 180° around the origin?

Back

(-x, -y)

Front

What is the result of rotating a point (x, y) 270° counterclockwise around the origin?

Back

(y, -x)

Front

What does it mean to translate a figure?

Back

To slide it in a straight line without changing its shape or size.

Front

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

Back

(x, -y)

Front

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

Back

(-x, y)

Front

If triangle A is rotated 90° clockwise, which transformation rule applies?

Back

(x, y) → (y, -x)