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March 2020

Azim Premji University, Math Space (2020) Low floor high ceiling tasks : Summing v. At Right Angles (6). pp. 26-29. ISSN 2582-1873

B., Sury (2020) Tiresome paths, water gates and Euler’s formula. At Right Angles (6). pp. 6-9. ISSN 2582-1873

Community Mathematics Centre, CoMaC (2020) Chika’s test for divisibility by 7. At Right Angles (6). pp. 16-18. ISSN 2582-1873

Dash, Arddhendu Shekhar (2020) Justification of 90° angle construction procedure. At Right Angles (6). pp. 35-39. ISSN 2582-1873

De, Prithwijit and Shirali, Shailesh (2020) Problems for the senior school. At Right Angles (6). pp. 69-71. ISSN 2582-1873

M., Srinivasan (2020) Introducing robocompass : a nifty tool for geometrical construction. At Right Angles (6). pp. 63-66. ISSN 2582-1873

Nair, Vinay (2020) Trials with triangles. At Right Angles (6). pp. 19-22. ISSN 2582-1873

Narasimhan, M. S. (2020) The mathematics of India by P.P. Divakaran. At Right Angles (6). pp. 77-81. ISSN 2582-1873

Padyala, Radhakrishnamurty (2020) Geometrical proof of an application of Ptolemy’s theorem. At Right Angles (6). pp. 43-44. ISSN 2582-1873

Prasad, Ashok (2020) Conversations on greatest common divisor. At Right Angles (6). pp. 30-34. ISSN 2582-1873

R., Haragopal (2020) Hara’s triangle and triple. At Right Angles (6). pp. 23-25. ISSN 2582-1873

Ramachandran, A. (2020) Middle school problems requiring exhaustive search. At Right Angles (6). pp. 67-68. ISSN 2582-1873

Ramachandran, A. (2020) Solutions to search problems. At Right Angles (6). pp. 75-76. ISSN 2582-1873

Ramachandran, A. (2020) Triangle centres : barycentric coordinates. At Right Angles (6). pp. 52-56. ISSN 2582-1873

Ramachandran, A. (2020) A word and an idea. At Right Angles (6). p. 42. ISSN 2582-1873

Shirali, Padmapriya (2020) Angles. At Right Angles (6). pp. 1-16. ISSN 2582-1873

Shirali, Shailesh (2020) Adventures in problem solving. At Right Angles (6). pp. 72-74. ISSN 2582-1873

Shirali, Shailesh (2020) Euler’s inequality for the circumradius and inradius of a triangle. At Right Angles (6). pp. 58-62. ISSN 2582-1873

Shirali, Shailesh (2020) Pretty power play. At Right Angles (6). pp. 45-47. ISSN 2582-1873

Shirali, Shailesh (2020) Sums of cubes. At Right Angles (6). pp. 10-14. ISSN 2582-1873

Shirali, Shailesh (2020) The closing bracket : a tale of two viruses. At Right Angles (6). p. 82. ISSN 2582-1873

Sircar, Swati (2020) Impossible triangles on dot sheets. At Right Angles (6). ISSN 2582-1873

Vikranth, Vishak (2020) Product numbers. At Right Angles (6). pp. 40-41. ISSN 2582-1873

अज़ीम प्रेमजी यूनिवर्सिटी, मैथ स्पेस (2020) V का जोड़. At Right Angles. ISSN 2582-1873

आर., हरगोपाल (2020) हारा के त्रिभुज और त्रिक. At Right Angles. ISSN 2582-1873

कम्युनिटी मैथमेटिक्स सेंटर, कोमैक (2020) 7 से विभाज्यता की 'चिका' जाँच. At Right Angles. ISSN 2582-1873

दाश, अरधेन्दू शेखर (2020) 90⁰ के कोण की रचना की कार्यविधि की प्रमाणिकता. At Right Angles. ISSN 2582-1873

नरसिम्हन, एम. एस. (2020) द मैथमेटिक्स ऑफ़ इंडिया - पी. पी. दिवाकरण. At Right Angles. ISSN 2582-1873

नायर, विनय (2020) त्रिभुजों से पड़ताल. At Right Angles. ISSN 2582-1873

प्रसाद, अशोक (2020) महत्तम समापवर्तक पर बातचीत. At Right Angles. ISSN 2582-1873

रामचन्द्रन, ए. (2020) माध्यमिक विद्यालयों की समस्याओं को विस्तृत खोज की आवश्यकता है. At Right Angles. ISSN 2582-1873

विक्रान्त, विशाक (2020) गुणनफल संख्याएँ. At Right Angles. ISSN 2582-1873

सूरी, बी. (2020) उबाऊ रास्ते, जल द्वार और यूलर का फॉर्मूला. At Right Angles. ISSN 2582-1873