Question

which transformation changes the size of a shape while maintaining its proportions?
a. rotation
b. dilation
c. translation
d. reflection

Explanation:

• Rotation (a) turns a shape around a point, not changing size or proportions.
• Dilation (b) scales a shape by a factor, changing size while keeping proportions (similar figures).
• Translation (c) moves a shape, preserving size and proportions.
• Reflection (d) flips a shape, preserving size and proportions.

Only dilation changes size with proportionality.

Answer:

b. Dilation