A diagonal of a polygon is a line segment that joins two nonconsecutive vertices.

A

B

C

D

E

G

F

1

2

A diagonal of a polygon is a line segment that joins two nonconsecutive vertices.

A

B

C

D

E

G

F

1

2For the heptagon shown:AB, CD, and EF are examples of sides of the polygon.

A diagonal of a polygon is a line segment that joins two nonconsecutive vertices.

A

B

C

D

E

G

F

1

2For the heptagon shown:AB, CD, and EF are examples of sides of the polygon.∠2 is an interior angle.∠1 is an exterior angle.

A diagonal of a polygon is a line segment that joins two nonconsecutive vertices.

A

B

C

D

E

G

F

1

2For the heptagon shown:AB, CD, and EF are examples of sides of the polygon.∠2 is an interior angle.∠1 is an exterior angle.FC and FD are diagonals