1 One function of a movie projector is to enlarge the image on the film. This procedure is an example of a
1) line of symmetry
2) line reflection
3) translation
4) dilation
2 Which transformation can map the letter S onto itself?
1) glide reflection
2) translation
3) line reflection
4) rotation
3 Which transformation is not always an isometry?
1) rotation
2) dilation
3) reflection
4) translation
4 Which transformation produces a figure that is always the mirror image of the original
figure?
1) line reflection
2) dilation
3) translation
4) rotation
5 After which transformation of could the image not have the same area?
1) translation
2) rotation
3) point reflection
4) dilation
Combined Transformations
6 A transformation of a polygon that always preserves both length and orientation is
1) dilation
2) translation
3) line reflection
4) glide reflection
7 Which transformation does not preserve orientation?
1) translation
2) dilation
3) reflection in the y-axis
4) rotation
8 Which transformation is an opposite isometry?
1) dilation
2) line reflection
3) rotation of 90°
4) translation
9 Which transformation would not always produce an image that would be congruent to the
original figure?
1) translation
2) dilation
3) rotation
4) reflection
10 If is the image of , under which transformation will the triangles not be
congruent?
1) reflection over the x-axis
2) translation to the left 5 and down 4
3) dilation centered at the origin with scale
factor 2
4) rotation of 270° counterclockwise about the
origin