noun
scale factor; similarity ratio
Mathematics term for the ratio of corresponding lengths in similar figures; used in geometry contexts.
相似比が2:1の図形では、面積比は4:1になる。
For figures with a similarity ratio of 2:1, the area ratio becomes 4:1.
拡大率 is a more general term for magnification rate, while 相似比 is used in the context of geometric similarity.
Compound of 相似 (similarity) and 比 (ratio).