#1**+3 **

NORT is a parallelogram | Given |

NO=OR=NT=TR | Given |

NORT is a rhombus | definition of rhombus |

OT bisects NR | in a parallelogram, diagonals bisect |

NH=HR | definition of segment bisect |

OH=OH | reflexive property of equality |

triangle NOH=triangleROH | SSS congruency theorem |

OHN=OHR | CPCTC |

OHR+OHN=180 | linear pair |

OHN+OHN=180 | substitution |

2OHN=180 | simplify |

OHN=90, OHR=90 | division property of equality |

OT perpendicular to NR | definition of perpendicular |

I changed your chart a bit to make it more specific. I myself am a geometry student as well so if anyone sees anything that's wrong, don't be afraid to tell me!

mimi99702.02.2021

#3**+3 **

Let's say this table is Ila's working space. If half of the working space paper.

paper |

Next, a third of the paper is sticky notes...

note+paper | paper | paper |

So, we end up getting only 1/6 of the working space is covered in sticky notes. We use 1/2x1/3 to get this.

mimi99701.02.2021