# Browse by Periodicals

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**25**.

## November 2021

De, Prithwijit
(2021)
*Adventure with quadratic equations.*
At Right Angles.
pp. 104-108.
ISSN 2582-1873

Ghoshal, Manoranjan
(2021)
*Angle trisection – an approximate procedure.*
At Right Angles.
pp. 71-72.
ISSN 2582-1873

K., Baburajan
(2021)
*Areas of triangles between two parallel lines with same base are equal : proof(?) by paper folding.*
At Right Angles.
pp. 21-30.
ISSN 2582-1873

Ramachandran, A.
(2021)
*Bachet’s problem.*
At Right Angles.
pp. 64-65.
ISSN 2582-1873

Shirali, Padmapriya
(2021)
*Coordinates.*
At Right Angles.
pp. 1-12.
ISSN 2582-1873

Mathematics Co-Development Group, APF
(2021)
*Deciphering the median formula - part 2 : from the Ogives.*
At Right Angles.
pp. 56-63.
ISSN 2582-1873

Patil, Swasti and Laxshmisha, Siddharth and Christino, Davin
(2021)
*Exploring and connecting : inradius and factorisation.*
At Right Angles.
pp. 73-78.
ISSN 2582-1873

Dhasmana, Preeti
(2021)
*Finding out area by using symmetry.*
At Right Angles.
pp. 44-53.
ISSN 2582-1873

Ghosh, Sourangshu
(2021)
*Inequalities - part 2.*
At Right Angles.
pp. 109-112.
ISSN 2582-1873

Chhabra, Nishtha
(2021)
*Kasuti : the mathematics of embroidery.*
At Right Angles.
pp. 7-12.
ISSN 2582-1873

Ramachandran, A.
(2021)
*Middle school problems-theme: number of digits.*
At Right Angles.
pp. 69-70.
ISSN 2582-1873

Sircar, Swati
(2021)
*Mini review : Bayes' theorem and independence
by 3Blue1Brown.*
At Right Angles.
pp. 101-103.
ISSN 2582-1873

Sadagopan, Rajesh
(2021)
*My Square is your Triangle! – The king said to Pascal.*
At Right Angles.
pp. 38-43.
ISSN 2582-1873

Islam, Mujahidul
(2021)
*Playing with
turtle blocks.*
At Right Angles.
pp. 87-96.
ISSN 2582-1873

S, Jayasree
(2021)
*Quantifying steepness – a reflection.*
At Right Angles.
pp. 31-37.
ISSN 2582-1873

Mouli, Haran and Gandhi, Mahavir and Chavan, Sarth
(2021)
*Rational ‘twin’ isosceles triangles.*
At Right Angles.
pp. 115-119.
ISSN 2582-1873

Azim Premji University, Math Space
(2021)
*Review : counters.*
At Right Angles.
pp. 97-100.
ISSN 2582-1873

Kalbhavi, Praneetha
(2021)
*Solution to a problem from the CMI entrance test 2020.*
At Right Angles.
pp. 79-81.
ISSN 2582-1873

Tikekar, V.G.
(2021)
*Spoof numbers and spoof solutions - part I.*
At Right Angles.
pp. 13-17.
ISSN 2582-1873

Metz, James
(2021)
*The Tachymeter and the Hyperbola.*
At Right Angles.
pp. 54-55.
ISSN 2582-1873

K., Sasikumar
(2021)
*Trigonometric proof of Ptolemy’s theorem.*
At Right Angles.
pp. 113-114.
ISSN 2582-1873

Dash, Arddhendu Shekhar
(2021)
*Verbal communication in a mathematics classroom.*
At Right Angles.
pp. 18-20.
ISSN 2582-1873

Padyala, Radhakrishnamurty
(2021)
*An easy proof of Ptolemy’s theorem.*
At Right Angles.
pp. 66-68.
ISSN 2582-1873

Adiga, Shreyas S
(2021)
*A functional equation from APMO 2019.*
At Right Angles.
pp. 82-83.
ISSN 2582-1873

Purkait, Soham
(2021)
*A relation between polynomial and exponential functions.*
At Right Angles.
pp. 84-86.
ISSN 2582-1873