The side of an heptagon is 12. Calculate perimeter, area

P = 7 x side

P = 7 x 12

P =

A = 7/4s

A = 7/4(12)

A = 7/4(144)cot(25.)

A = 252 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 =