zhè gè / jiǎo / shì / yí gè / zhé zhuǎn / tōng cháng / dà yú / píng jiǎo / xiǎo yú / zhōu jiǎo

这个角是一个折转，通常大于平角小于周角。

This angle is a reflex angle, usually greater than a straight angle but less than a full angle.