One round side: Cone
Two round sides: Cylinder or frustrum
More than 2 round sides: no specific name.
Shapes with straight sides are called polygons
a triangle
quadrangles No it quadrilaterals
They are called Quadrilaterals. The 'Quad' means 4
A shape with round sides is called a "curvilinear shape." Common examples include circles and ellipses, which feature smooth, continuous curves without any sharp angles. In broader terms, shapes that include rounded edges, like ovals or arcs, also fall under this category.
They are called sides or edges.
Shapes with straight sides are called polygons
They are called heptagons.
They are called hendecagons.
Hexagon.
Nonagons.
a triangle
There is no special name that distinguishes shapes with more than four sides from shapes with four or fewer.
A quadrilateral.
quadrangles No it quadrilaterals
They are called Quadrilaterals. The 'Quad' means 4
Names for shapes that have equal sides are called EQUILATERAL.