An octogon.
you call a two dimensional shape with six sides a hexagon
It is an isosceles triangle that has two equal sides
A five-sided geometric shape is a pentagon.
You would call them congruent or similar.
An octogon.
you call a two dimensional shape with six sides a hexagon
A regular octagon
A circle!!
It is an isosceles triangle that has two equal sides
A five-sided geometric shape is a pentagon.
You would call them congruent or similar.
A rhombus
vertex
An isosceles triangle.
Isoceles
Hexadecagon (16 sides) and Octadecagon (18 sides) both fit. Am I missing something?