Thuận Phạm Văn

Maths

[Thuận Phạm Văn @pvthuan]

A fish puzzle

[Thuận Phạm Văn @pvthuan]

@AliensArrival @diegorattaggi bonnus

[Thuận Phạm Văn @pvthuan]

Regular pentagons are stacked together. What fraction is shaded?

[Thuận Phạm Văn @pvthuan]

@diegorattaggi No, I mean a step by step geometry construction. How can you draw the smaller pentagon?

[Thuận Phạm Văn @pvthuan]

@diegorattaggi

[Diego Rattaggi 🇨🇭 @diegorattaggi]

Geometry puzzle. #wfis #mathiratti

[Thuận Phạm Văn @pvthuan]

@diegorattaggi I solve it by using triangular grid. Perhaps you created the problem from such a grid.

[Thuận Phạm Văn @pvthuan]

@diegorattaggi pink/white=6/25.

[Thuận Phạm Văn @pvthuan]

@ilarrosac @diegorattaggi Why P=(49/4)Po?, and what is Po?

[Ignacio Larrosa Cañestro @ilarrosac]

@diegorattaggi

[Thuận Phạm Văn @pvthuan]

@BossGercek @diegorattaggi Using similarity, we can find the side length of the large pentagon= 7. How can we find the exact value of 2k+5k? and why did you have 4x49/4=49.

[Thuận Phạm Văn @pvthuan]

@BossGercek @diegorattaggi Can you explain why you got 2k and 5k, 72/2?

[Catriona Agg @Cshearer41]

Five circles in a square. The total red area is 24. What’s the total orange area?

[Thuận Phạm Văn @pvthuan]

🎈 11. Ngô Ng Phương Uyên, Accountancy, AMS
️🎈12. Vũ Hoàng, Chem & BC, AMS
️🎈13. Dương Ngọc Yến, CS Sci, AG
️🎈14. Trần Thị P Thảo, EEE, CNN,HN
️🎈15. Nguyễn Hoàng Minh, EEE, HSGS
️🎈16. Nguyễn T Quỳnh Trang, Materials Eng, HSGS
️🎈17. Vũ Đức Thành, CS, AMS

[Thuận Phạm Văn @pvthuan]

Kết quả thi đại học NTU Singapore năm 2020:
Chúc mừng các em Hexagonists đã trúng tuyển

🎈1. Vũ Đức Anh, Computer Sci, HSGS
️🎈2. Bùi Quang Huy, EEE, HSGS
️🎈3. Nguyễn Vinh Quang, Computer Sci
️🎈4. Nguyễn Minh Tuấn, Computer Eng, SPHN
️🎈

[Thuận Phạm Văn @pvthuan]

️🎈5. Nguyễn Ngọc Minh, Maths & Comp Sci, SPHN
️🎈6. Lê Ngọc Quỳnh Mai, Maths & Econ, SPHN
️🎈7. Trần Trung Dũng, Computer Sci, HSGS
️🎈8. Phạm Bá Thắng, Information Eng, AMS
️🎈9. Lương Hiền Nga, DATA Sci, AI, AMS
️🎈10. Trần Hữu Nghĩa, Mechanical Eng, AMS
️🎈

[Thuận Phạm Văn @pvthuan]

Đoàn dự thi Đại học NTU, Singapore

[Thuận Phạm Văn @pvthuan]

@LeHuyTien6 @Cshearer41 \draw[blue](0,-\b) rectangle (\b, 0);
\draw[fill=cyan!66](0,-\a) arc (-90:0:\a)--(0,0);
\draw(\x,-\x) circle(.02);
\draw[fill=yellow] (\x-1,-\x-1) arc (-135:45:\x);
\draw(\x-1,-\x-1)--(\x+1,-\x+1) ;
\end{scope}
\end{tikzpicture}

[Thuận Phạm Văn @pvthuan]

@LeHuyTien6 @Cshearer41 \begin{tikzpicture}
\def\a{2}
\pgfmathsetmacro{\x}{sqrt(2)}
\pgfmathsetmacro{\b}{\a*sqrt(2)}
\draw[fill=yellow] (0,0) arc (45:-135:\a);
\draw[fill=cyan!66] (0,0) arc (0:-90:\b)--(-\b,-0);
\draw(-\b,-2-\x) rectangle (2-\x,0);
\begin{scope}[xshift=50, scale=1.22]