Oval, round, square, oblong, heart, diamond and triangle. Classification comes down to one ratio (length ÷ width) and two width comparisons (forehead vs jaw, cheekbones vs both). Each encyclopedia page pairs with topic pages — hairstyles, glasses, beard, brows, collars.
Take the five-question self-quiz, the ruler method, or let the FaceLab tool classify from a photo with the exact ratio reported.
这一页是英文内容库中的一篇。中文导读说明它讲什么、可以怎么用；完整的比例数据与逐条建议请看下方英文原文 —— 那是这一页的主体内容。
完整功能见下面的英文界面 —— 界面本身也会按中文显示。