#### Answer

The even vertices are vertex A, vertex B, vertex G, vertex H, and vertex I.
The odd vertices are vertex C, vertex D, vertex E, and vertex F.

#### Work Step by Step

An even vertex is a vertex with a degree that is an even number. An odd vertex is a vertex with a degree that is an odd number.
The degree of vertex A is 2, so vertex A is an even vertex.
The degree of vertex B is 2, so vertex B is an even vertex.
The degree of vertex C is 5, so vertex C is an odd vertex.
The degree of vertex D is 3, so vertex D is an odd vertex.
The degree of vertex E is 1, so vertex E is an odd vertex.
The degree of vertex F is 3, so vertex F is an odd vertex.
The degree of vertex G is 2, so vertex G is an even vertex.
The degree of vertex H is 2, so vertex H is an even vertex.
The degree of vertex I is 2, so vertex I is an even vertex.