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https://dspace.ctu.edu.vn/jspui/handle/123456789/64211| Title: | Problems in this isue |
| Keywords: | Math Secondary school |
| Issue Date: | 2021 |
| Series/Report no.: | Tạp chí Toán học & Tuổi trẻ;Số 529 .- Tr.20,42 |
| Abstract: | Problem T12/529. Given a triangle ABC inscribed in a circle (O). The points X, Y belong to (O) so that AX // BC, BY // AC. Let Z, T respectively be the intersections between XY and AC, BC. Let O₁, O₂, O₃, O₄ respectively be the circumcenters of the triangles AXZ, BYT, CYT, CXZ. Show that O₁O₂O₃O₄ is a parallelogram. Translated by Nguyen Phu Hoang Lan (College of Science - Vietnam National University. Hanoi) |
| URI: | https://dspace.ctu.edu.vn/jspui/handle/123456789/64211 |
| ISSN: | 2734-9284 |
| Appears in Collections: | Toán học và tuổi trẻ |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| _file_ Restricted Access | 416.24 kB | Adobe PDF | ||
| Your IP: 3.128.226.121 |
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