It lies between the internal oblique and the underlying transverse fascia. The aponeurosis of the external oblique muscle forms the inguinal ligament. Alhazen associated 'strong' lights with perpendicular rays and 'weak' lights with oblique ones. The mandibles are opposed and move in the horizontal or oblique plane. An asymptote can be either vertical or non-vertical (oblique or horizontal). Dorsal scales are placed in an oblique arrangement. Dorsal scales are smooth and strongly oblique. Indication of external oblique bulging over iliac crest. This method requires an SEM image obtained in oblique low angle lighting. There is a slight indication of the external oblique bulging over the iliac crest. A variant of oblique projection is called "military projection". In complex projections such as of oblique aspect. The sense of motion is consistent with the direction of the Nankai Trough's oblique convergence. Bellowing is performed in a "head oblique, tail arched" posture. It receives distinctly different innervation and vascular supply in comparison to the internal oblique.