Shapes with straight sides are called polygons
a triangle
quadrangles No it quadrilaterals
They are called Quadrilaterals. The 'Quad' means 4
Names for shapes that have equal sides are called EQUILATERAL.
They are called sides or edges.
Shapes with straight sides are called polygons
They are called heptagons.
They are called hendecagons.
Nonagons.
Hexagon.
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 Enneahedrons or nonahedrons.
They are called Quadrilaterals. The 'Quad' means 4