10/11/2020 | Many nontrivial Olympiad problems can be solved by angle chasing. This class we covered inscribed angles, cyclic quadrilaterals, and properties of the orthocenter. [Show less] |

10/18/2020 | Directed angles, incenter/excenter lemma, problems. [Show less] |

10/25/2020 | More advanced angle chasing problems [Show less] |

11/1/2020 | Power of a Point and Radical Axis [Show less] |

11/8/2020 | Harder problems with Power of a Point [Show less] |

11/15/2020 | Today we did three challenging problems whose solutions involved Power of a Point in a fundamental way. [Show less] |

11/22/2020 | We will introduce Ceva's Theorem, Menelaus' Theorem, the Extended Law of Sines, and some basic length formulas in a triangle. [Show less] |

12/6/2020 | Two proofs of Heron's Formula; Nine-Point Circle, Euler Line, Monge's Theorem [Show less] |

12/13/2020 | Simson line configuration (including proof that Simson(P) bisects PH) and incenter touch-point configuration. [Show less] |

1/10/2021 | We will go over the winter break geometry homework and review last quarter's material, and do some Olympiad problems from other subjects if time allows. [Show less] |

1/17/2021 | Complex numbers and AIME problems [Show less] |

1/24/2021 | [Show less] |

1/31/2021 | [Show less] |

2/7/2021 | [Show less] |

2/21/2021 | AIME Number Theory problems, which tend to be computational [Show less] |

2/28/2021 | [Show less] |

3/7/2021 | [Show less] |

4/11/2021 | [Show less] |

4/25/2021 | reviewing the 2021 USAJMO [Show less] |

5/9/2021 | A few tricks for sums on olympiads [Show less] |

5/23/2021 | Also discussion of finite abelian groups [Show less] |

6/6/2021 | Dirichlet's theorem on arithmetic progressions, an comprehensive outline thereof This involves many standard manipulations of sums, complex numbers, and bounding arguments [Show less] |