No plane figure has four vertices unless it has four sides.
it is a plane and closed figure it has 4 corners and sides all the sides are equal
I AM A SPACE FIGURE WITH 5 FACES, 8 EDGES, AND 4 CORNERS. which SPACE FIGURE AM i?
All plane figures except circles have corners, and even that is debatable that circles have an infinite number of corners. Corners are simply where the line tracing the perimeter of the shape changes direction. Without any corners, you would have not have a convex figure. You would have a line. ■
A single plane diamond (meaning not 3D or an object you hold in your hand) you draw on paper has 4 sides and 4 corners. ~
pyramid
pyrmid
Ah, what a delightful question! A figure with 4 sides and 3 corners is a triangle. Triangles are such lovely shapes, full of balance and harmony. Keep exploring the world of shapes and let your creativity flow like a gentle stream, my friend.
quadlateral
rectangular pyramid
noting but a 3D figure called a pyramaid
square
A square.