Octagon.
An 8-sided plane figure is an octagon.
A pyramid with a base that has seven sides.
An octagon.
An Octagon
An octagon.
Because an "octagon" is defined as a closed plane figure with 8 vertices which is bounded by straight lines. It must, therefore, have eight sides.
A plane figure with eight sides is an octagon.
A heptagon has seven polygonal faces - sides that are plane.
An eight-sided plane figure is an octagon. If the sides are all the same length, and the angles are all equal, it is a regular octagon.
A plane with six sides and angles is called a hexagon.
no it is not
A two-dimensional figure is a polygon. The eight sides means that it uses the prefix octa- (meaning eight) to form the name octagon.