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Đào Thanh Oai
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Conjecture on a cyclic quadrilateral …
Đào Thanh Oai
December 21, 2024
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A necessary and sufficient condition …
Đào Thanh Oai
September 23, 2024
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Generalization of the fourth Fermat-D…
Đào Thanh Oai
July 17, 2022
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Generalization of the third Fermat-Da…
Đào Thanh Oai
July 17, 2022
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Generalization of the second Fermat-D…
Đào Thanh Oai
July 17, 2022
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Generalization of the First Fermat-Da…
Đào Thanh Oai
July 17, 2022
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A Formula of the area equalangular co…
Đào Thanh Oai
July 9, 2022
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New formular in a triangle
Đào Thanh Oai
July 5, 2022
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Another generalization of the Simson …
Đào Thanh Oai
July 5, 2022
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A theorem on internal and external bi…
Đào Thanh Oai
July 4, 2022
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Circumconic associated with a point
Đào Thanh Oai
July 3, 2022
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A conic associated with X(2), X(6), X…
Đào Thanh Oai
July 1, 2022
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