Most all corrective lenses are convex. Anything round, or even just "roundish" has a convex shape. From Bowling balls to chickens' eggs, they are all convex, or "rounded outward" in shape.
All triangles and regular polygons such as squares, parallelograms, trapezoids, and rectangles are convex because each of their interior angles is less than 180o.
Plain (2-dimensional), closed, convex shapes.Plain (2-dimensional), closed, convex shapes.Plain (2-dimensional), closed, convex shapes.Plain (2-dimensional), closed, convex shapes.
buildings, desk, door
The surface is concave if the liquid is attracted to the container walls and convex if it is not
edi itanong mo sa nanay mo
All triangles and regular polygons such as squares, parallelograms, trapezoids, and rectangles are convex because each of their interior angles is less than 180o.
There is no name that is used for all such shapes. A section of a sphere or ellipsoid, a cone, a convex lenticle (lens-shape) are some examples.
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
Plain (2-dimensional), closed, convex shapes.Plain (2-dimensional), closed, convex shapes.Plain (2-dimensional), closed, convex shapes.Plain (2-dimensional), closed, convex shapes.
Convex and concave
convex shaped or biconvex
It is extremely difficult to determine.All triangles and quadrilaterals will tessellate.There are 15 classes of irregular convex pentagons which will tessellate.Regular hexagons and three classes of irregular convex hexagons will tessellate.In addition there are several examples of concave polygons, particularly those with an even number of sides, which will tessellate.Finally, there are very many non-polygonal shapes, some derived from polygons, which will also tessellate. For examples of this last class of shapes, search the web for MC Escher's Symmetry artwork.
leaf
Some examples are a square, rectangle, that is all I know so far
buildings, desk, door
Some two-dimensional shapes: square triangle rectangle diamond circle trapezoid
Some examples of 3D shapes with angles include cubes, pyramids, and rectangular prisms.