what is the difference between convex and concave which way does a curve go are curves concave or convex what is the difference between a convex and a concave curve? concave curve definition what is the difference between a curve and a straight line? what is the difference between a concave curve and a straight line which type of curve is straight or concave if a shape is convex it will not be concave what is the a concave curve which side of the curve is a convex curve what is the convex curve which is a curve that is convex or concave which way is a concave curve oriented? what is the difference between a concave curve and a convex curve? when a straight line is convex if a curve is convex or concave what is convex curve which side of a curve is convex or concave? which curve is concave vs. convex?