[机] 凸角

[ noun ]
an angle pointing outward; an interior angle of a polygon that is less than 180 degrees
<noun.shape>

Salient \Sa"li*ent\, a. [L. saliens, -entis, p. pr. of salire to
leap; cf. F. saillant. See {Sally}, n. & v. i..]
1. Moving by leaps or springs; leaping; bounding; jumping.
``Frogs and salient animals.'' --Sir T. Browne.

2. Shooting out or up; springing; projecting.

He had in himself a salient, living spring of
generous and manly action. --Burke.

3. Hence, figuratively, forcing itself on the attention;
prominent; conspicuous; noticeable.

He [Grenville] had neither salient traits, nor
general comprehensiveness of mind. --Bancroft.

4. (Math. & Fort.) Projecting outwardly; as, a salient angle;
-- opposed to {re["e]ntering}. See Illust. of {Bastion}.

5. (Her.) Represented in a leaping position; as, a lion
salient.

{Salient angle}. See {Salient}, a., 4.

{Salient polygon} (Geom.), a polygon all of whose angles are
salient.

{Salient polyhedron} (Geom.), a polyhedron all of whose solid
angles are salient.