June... It's winter here in Melbourne, and very cold in the morning.
This month, I pick up the Sangaku at Kiryutenmangu.
This month, I pick up the Sangaku at Kiryutenmangu.
It's dedicated in 1852.
The Kiryutenmangu is in Gunma prefecture, Japan.
The Kiryutenmangu is in Gunma prefecture, Japan.
The description of some Sangaku problems are shown on a board.
I take one problem form the 'sangaku'. It's like that.
See the left figure. A square paper is folded and inscribed circles (Red and Green) are drawn into triangles.
Now ‘χ’ is given there (lower-right of the figure).
Express the diameter of green circle, the diameter of red circle and the length of one side of the square paper in terms of χ.
Now ‘χ’ is given there (lower-right of the figure).
Express the diameter of green circle, the diameter of red circle and the length of one side of the square paper in terms of χ.
The photo images from:
http://www.wasan.earth.linkclub.com/gunma/kiryutenmangu2.html
http://www.wasan.earth.linkclub.com/gunma/tenmangukaisetu.png
I have study session in Ringwood, Vic, Australia. Please contact me by email or SMS if you are interested.
Contact
http://www.wasan.earth.linkclub.com/gunma/kiryutenmangu2.html
http://www.wasan.earth.linkclub.com/gunma/tenmangukaisetu.png
I have study session in Ringwood, Vic, Australia. Please contact me by email or SMS if you are interested.
Contact