Review: Chapter 3 Test Review

Front

What are the coordinates of the image S if T is at (3,-2)?

Back

(3,-4)

Front

What are the coordinates of the image R if r(90,0) is applied to T?

Back

(3,3)

Front

What are the coordinates of the image T if R is reflected over the y-axis and T is at (-2,0)?

Back

(4,1)

Front

Does the figure have point symmetry?

Back

Yes

Front

What is the smallest degree number of the figure's rotational symmetry?

Back

60

Front

Define point symmetry.

Back

A figure has point symmetry if it can be rotated 180 degrees about a point and appear unchanged.

Front

Define rotational symmetry.

Back

A figure has rotational symmetry if it can be rotated around a central point and still look the same at certain angles.

Front

What is the formula for finding the coordinates of a point after a reflection over the y-axis?

Back

(x, y) becomes (-x, y).

Front

What is the formula for finding the coordinates of a point after a 90-degree rotation counterclockwise?

Back

(x, y) becomes (-y, x).

Front

What is the formula for finding the coordinates of a point after a 180-degree rotation?

Back

(x, y) becomes (-x, -y).