Calculating the Perimeter of a Polygon



Calculating the Perimeter of a Polygon

1. Calculate the length of each side of the polygon using the _________________________ formula.

2. _______________ all the lengths of the polygon to find the perimeter.

3. Simplify and approximate the value if necessary.

Be sure to include the appropriate label in your answer.

Example:

Find the perimeter of quadrilateral ABCD with vertices A(-4, 0), B (3, 4), C(2, 3) and D(2, 0).

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|Calculating the Area of a Triangle |

|Find the equation of the line that represents the base of the triangle. |

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|Find the equation of the line that represents the height of the triangle. |

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|Find the point of intersection of the line representing the height of the triangle and the line representing the base of the triangle. |

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|Calculate the length of the base of the triangle using the ________________ formula: |

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|Calculate the length of the height of the triangle using the distance formula: |

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|Calculate the area using the formula: ________________________________ |

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|Example: |

|Find the area of triangle ABC with vertices A(-2, 6), B(3, 1), and C(2, -4). |

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|Calculating the Area of a Rectangle |

|Calculate the length of the base of the rectangle using the _________________ formula: |

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|Calculate the length of the width of the rectangle using the distance formula: |

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|Calculate the area using the formula: _________________________________ |

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|Example: |

|Find the area of rectangle ABCD with vertices A(-4, -4), B(0,2), C(9, -4), and D(5, -10). |

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