The perimeter of an heptagon is 10. Calculate side, area

s = | P |

7 |

s = | 10 |

7 |

s = 4

A = 7/4s

A = 7/4(4)

A = 7/4(2.6)cot(25.)

A = 3.6 x 2.4

A =

Interior Angle Sum = (sides - 2) x 180°

Interior Angle Sum = (7 - 2) x 180°

Interior Angle Sum = 5 x 180°

Interior Angle sum = 900°

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 =