Enter one of the following combos: (s and n),(r and n),(a and n),(a and s and n)

__Calculate Sum of the Interior Angles:__

Interior Angle Sum = (n - 2) x 180°

Interior Angle Sum = (7 - 2) x 180°

Interior Angle Sum = (5) x 180°

Interior Angle sum =**900°**

__Calculate the number of diagonals of the polygon:__

Diagonals =**14**

__Calculate the number of diagonals from one vertex:__

1 vertex Diagonals = n - 3

1 vertex Diagonals = 7 - 3

1 vertex Diagonals =**4**

__Calculate the number of triangles that can be drawn from one vertex:__

Triangles = N - 2

Triangles = 7 - 2

Triangles =**5**

__Construct the formal name of this polygon:__

Since the polygon has 7 sides, it is a heptagon

Interior Angle Sum = (n - 2) x 180°

Interior Angle Sum = (7 - 2) x 180°

Interior Angle Sum = (5) x 180°

Interior Angle sum =

Diagonals = | n(n - 3) |

2 |

Diagonals = | 7(7 - 3) |

2 |

Diagonals = | 7(4) |

2 |

Diagonals = | 28 |

2 |

Diagonals =

1 vertex Diagonals = n - 3

1 vertex Diagonals = 7 - 3

1 vertex Diagonals =

Triangles = N - 2

Triangles = 7 - 2

Triangles =

Since the polygon has 7 sides, it is a heptagon