An isosceles triangle and an equilateral triangle
circle
Because the prefix , hex- refers to six. A plane figure with 12 vertices is a dodecagon.
A rhombus is a plane (flat) figure so it has no faces. It has 4 edges and four vertices
A pyramid with a base that has seven sides.
A circle with any radius, including zero.
circle
No plane figure has four vertices unless it has four sides.
A expample of a plane figure with 6 sides and 6 vertices is called a hexagon. hex means 6.
nonagon
Number of vertices in the plane figure = 4.
A tautological description of a plane figure with four vertices.
Because the prefix , hex- refers to six. A plane figure with 12 vertices is a dodecagon.
Rigidity.
ur mon
A rhombus is a plane (flat) figure so it has no faces. It has 4 edges and four vertices
It is a plane figure (2-D) which has 6 sides and 6 vertices
A pyramid with a base that has seven sides.