# Mathematics Chapter 12

🇬🇧

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🇬🇧 | 🇬🇧 |

Polygon | A polygon can be defined as a flat or plane, two dimensional shape with straight sides. it doesn't have curved sides |

Volume OF Pyramid | 1/3 x base area x height |

Area Of Triangle | 1/2 x base area x height |

Area of Circle is Equal to | Area Of Rectangle = Base x Height |

Area OF Rectangle | Base x Height |

Regular Polygon | A regular polygon is a polygon with all equal sides and all equal angles and must be in a perfect shape. |

Irregular Polygon | An Irregular Polygon is a polygon with all unequal sides and with some unequal angles |

Apex | The vertex where all the slanted faces meet is called the Apex |

Right Pyramid | A pyramid which Apex is right above the base |

Regular Pyramid | A regular pyramid is a pyramid which have a regular polygonal base |

Volume of Cone | 1/3 x base area x height 1/3 x πr² x height |