noun🔗Share凸面，凸形 Any convex body or surface."The rounded, smooth surface of the new classroom's ceiling is a convex. "新教室天花板那圆润光滑的表面是一个凸面。mathphysicsChat with AIVocabulary GamePractice Reading
adjective🔗Share凸的，凸起的。 Curved or bowed outward like the outside of a bowl or sphere or circle"The back of the spoon is convex, while the inside is concave. "勺子的背面是凸起的，而里面是凹下去的。mathsciencefigureappearanceChat with AIVocabulary GamePractice Reading
adjective🔗Share凸的，凸面的。 (of a set in Euclidean space) arranged such that for any two points in the set, a straight line between the two points is contained within the set."The curve on the graph was convex; any line connecting two points on the curve also fell entirely within the curve. "图表上的曲线是凸的；连接曲线上任意两点的直线也都完全落在曲线的内部。mathspaceChat with AIVocabulary GamePractice Reading
adjective🔗Share凸的，凸面的 (of a polygon) having no internal angles greater than 180 degrees."The quadrilateral drawn on the whiteboard was convex, meaning none of its angles were greater than 180 degrees. "白板上画的那个四边形是凸四边形，也就是说，它所有的角都小于等于180度。mathChat with AIVocabulary GamePractice Reading
adjective🔗Share凸的，向上弯曲的 (of a real-valued function on the reals) having an epigraph which is a convex set."The profit function, showing how much money a bakery makes based on the number of cakes sold, is a convex function. "利润函数，它表示面包店根据售出的蛋糕数量所赚取的利润，是一个凸函数，向上弯曲。mathfunctionChat with AIVocabulary GamePractice Reading
