PDF chapter test TRY NOW

Classify the following shape and determine the adjacent vertices, adjacent sides and number of diagonals.
 
EX_5.1.png
  
1. The name of the above polygon is called a .
 
In polygon \(ABCDEFGHIJ\):
 
2. The vertex \(C\) is adjacent to the vertex.
 
3. The side \(DE\) is adjacent to the side.
 
4The number of diagonals of the polygon is.