8A83A8A5-251C-41D6-BBC5-E6321C332BFE

8588D2E8-A69D-4BB1-862B-D32C6F7D1E1F

F4354097-2526-49D3-BEDB-6C380C7CCC2E

546D0633-A763-4965-AEDF-5B1B58EF6E83

0BB242AF-00F3-40FA-A4A9-70056F1FCB7A

5DA19A7D-ADCF-4051-8693-25ACD51FBC5F

7F096C32-4333-4F34-A3D9-367C910858E2

254 An equilateral triangle with sides of 6

A3BD587A-8C5A-49F2-8F0F-0FDB362AE20C

帝皇的震惊

251 Goden ratio triangle for determination value of sin 18degree

250 A 45-45-90 trangle