稜角 [ㄌㄥˊ ㄐㄧㄠˇ; leng2 jiao3] edge and corner protrusion sharpness (of a protrusion) craggy ridge corner ◄ ►
稜角 りょうかく noun (common) (futsuumeishi) corner sharp corner mathematics dihedral angle ◄ ►