メインコンテンツ | サブコンテンツ | ||||
---|---|---|---|---|---|

sample01 | Relationship of interior angle
| Triangle | Quadrangle | Pentagon | Quadrangle |

Pentagon | |||||

sample02 | Quadrangle→Quadrangle
| To connect vertexes | Making by bisector of corner | Making by perpendicular bisector | Making by foot of perpendicular |

sample03 | various points
| Development of the wilderness | To equate areas | To equate angles | |

sample04 | Equating
| Area of triangle | Area of triangle (2) | Angle of corner | |

sample05 | Can you make?
| To make isosceles triangle | To make square | ||

sample06 | Theorem
| Theorem of incribed angles | Two middle points theorem | ||

sample07 | Alternative of real thing
| Swing | Swing (2) | Wiper of bus | Trisection machine of corner? |

sample08 | Complex Number
| Exploring change | Forming |