Photos of Interactive Mathematics Miscellany and Puzzles
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Golden ratio from equilateral triangle in semicircle Equilateral triangle OBC is constructed on radius OB of semicircle (O) with diameter AB. M is a point of arc BC such that CM=CB/2. MA intersects CO at N. Prove that CN/NO = φ... Thank you and best regards, Bui Quang Tuan See More |
