125 One question to know if the number is 1, 2 or 3 118 Why does factoring eliminate a hole in the limit? 105 How can I understand and prove the “sum and difference formulas” in trigonometry? 101 A function in which addition and multiplication behave the same way 78 Inscribing square in circle in just seven compass-and-straightedge steps

### Reputation (51,434)

 +10 Confusion with Bolyai-Gerwien theorem +10 Alternative notation for exponents, logs and roots? +10 Alternative notation for exponents, logs and roots? +10 Alternative notation for exponents, logs and roots?

### Questions (5)

 19 Does this expression have a (“better”) determinant form? 10 Special Products of Transpositions 9 What's the maximum possible score in this mathy solitaire puzzle? 8 Reference Request: Regge Symmetry “Angle-Edge” Duality 3 Given two lists of similar orthogonal matrices with common “conjugator”, determine that conjugator

### Tags (214)

 2k geometry × 634 470 calculus × 43 1k trigonometry × 235 370 conic-sections × 103 537 triangles × 124 345 intuition × 11 529 euclidean-geometry × 153 293 circles × 85 490 algebra-precalculus × 66 191 functions × 8