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 = (10 - 2) x 180°

Interior Angle Sum = (8) x 180°

Interior Angle sum =**1440°**

__Calculate the number of diagonals of the polygon:__

Diagonals =**35**

__Calculate the number of diagonals from one vertex:__

1 vertex Diagonals = n - 3

1 vertex Diagonals = 10 - 3

1 vertex Diagonals =**7**

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

Triangles = N - 2

Triangles = 10 - 2

Triangles =**8**

__Construct the formal name of this polygon:__

Since the polygon has 10 sides, it is a decagon

Interior Angle Sum = (n - 2) x 180°

Interior Angle Sum = (10 - 2) x 180°

Interior Angle Sum = (8) x 180°

Interior Angle sum =

Diagonals = | n(n - 3) |

2 |

Diagonals = | 10(10 - 3) |

2 |

Diagonals = | 10(7) |

2 |

Diagonals = | 70 |

2 |

Diagonals =

1 vertex Diagonals = n - 3

1 vertex Diagonals = 10 - 3

1 vertex Diagonals =

Triangles = N - 2

Triangles = 10 - 2

Triangles =

Since the polygon has 10 sides, it is a decagon