The end point where two sides of a polygon meet is the Vertex.
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< the point where the two rays meet is called a vertex.
That's the angle's "vertex".
not any regular shape A SHAPE WITH 3 VERTEXES AND 4 SIDES LOOKS LIKE A PENCIL. A RECTANGLE WITH A ROUNDED END AND A TRIANGULAR POINT ON TOP.
The triangle is a polygon with 3 sides. The polygon is a closed planar geometric shape made of line segments connected end to end to end. All triangles are polygons, but not all polygons are triangles. There are many variations on the theme when it comes to a polygon. There are many, many different kinds.
This is geometry! A point is a tiny dot that forms the straightest, thinnest line that extends in both direction infinitely. Countless numbers of those lines all placed together without leaving any spaces create a plane. If you were to stack the planes on top of each the result is a solid. A ray has one end point and goes on forever. A polygon is a figure with closed sides of straight line segments (two end points at the vertices) (E.g. square, pentagon, hexagon, et cetera...). A regular polygon is one which the sides have the same length. For example an equilateral triangle or a rhombus. A polygon is a plane; a polyhedron is a solid.