7+ Unit 4 Flashcard Study Guide: Rigid Transformations

Front

What is a reflection in geometry?

Back

A type of transformation where a figure is 'flipped' over a line of symmetry, producing a mirror image.

Front

What are the coordinates of the point (-5,2) after reflecting over the y-axis?

Back

(5,2)

Front

What is another term for a slide in geometry?

Back

Translation

Front

If a point A at (4,5) is translated 4 units to the left and 5 units down, what are the new coordinates?

Back

(0,0)

Front

What are transformations in geometry?

Back

Translations, reflections, and rotations that change the position of a figure.

Front

What is a rotation in geometry?

Back

A transformation that turns a figure around a fixed point.

Front

What is a translation in geometry?

Back

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

Front

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

Back

The y-coordinate changes sign.

Front

What is the result of reflecting the point (3,-4) over the y-axis?

Back

(-3,-4)

Front

What is the effect of a 90-degree rotation counterclockwise on the point (x,y)?

Back

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