Answer: C. Similar
Explanation:
- The term 'Similar' is used to describe two figures that are the same shape but not the same size.
- The term 'Parallel' is used for two lines on Cartesian plane which never meet.
- The term 'Congruent' is used for two figures that have same shape and size.
- The term 'Col-linear' is used for a number of points lie on the same line.
Hence, the term which best describes two figures that are the same shape but not the same size = Similar