Assuming you are talking about two triangles, "meet at a side" means they have a shared side. This side has two vertices, each of which is a vertex of both triangles. However, if the triangles only share one vertex, so that the tip of one triangle touches the tip of the other, they will have no side in common.
A dodecagon has 12 sides. Whether or not from one vertex, the number of sides remains the same. Each vertex is formed when 2 sides meet.
A shape with ten sides and seven vertex is impossible. There must always be the same amount of sides as vertex in a shape.
The Common Vertex is the place where multiple vertices meet in the same spot on their vertices.
A shape with ten sides and seven vertex is impossible. There must always be the same amount of sides as vertex in a shape.
conner
rectangle means same size and shape
Not exactly because for example two sides of a polygon meet at a vertex which is singular for vertices.
complemtary
adjacent angles
Angles in the same plane that have a common vertex and a common side are called adjacent angles. These angles share one side and the vertex where they meet, but they do not overlap. Adjacent angles can be formed by two rays emanating from a common point, and their measures can be added together to find the angle formed by the entire rotation around the vertex.
an angle
isosceles triangle