dà yú / yì bǎi bā shí dù / ér / xiǎo yú / sān bǎi liù shí dù / de / jiǎo / jiào zuò / fǎn jiǎo

大于一百八十度而小于三百六十度的角叫做反角。

An angle greater than 180 degrees but less than 360 degrees is called a reflex angle.