临界角;中性角

nonslip in point of key point of interest a point of honour point of honor to the point of on the point of theory of one point point of view point of order radius of point make a point of nonslip point angle of focal point angle of tooth point angle point point angle point-angle point A and pogonion)angle of convexity(formed by nasion cervical point angle axial point angle distopulpolingual point-angle axiomesiogival point-angle