# Items where Division is "Azim Premji University > University publications > At Right Angles" and Year is 2019

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**42**.

## (

(CoMaC), Community Mathematics Centre
(2019)
*Can there be SSA congruence?*
At Right Angles (4).
pp. 66-69.

(CoMaC), Community Mathematics Centre
(2019)
*Computing an angle in an equilateral triangle.*
At Right Angles (4).
pp. 102-103.

## A

A., Ramachandran
(2019)
*Middle school problems on averages.*
At Right Angles (5).
pp. 74-76.
ISSN 2582-1873

Agadeeshan, Shashidhar J.
(2019)
*From regular pentagons to the icosahedron and dodecahedron via the golden ratio – ii.*
At Right Angles (5).
pp. 17-26.
ISSN 2582-1873

Azim Premji University, (APU)
(2019)
*A very brief introduction to fractals.*
At Right Angles (4).
p. 1.

## B

Bhaduri, Ananda
(2019)
*Circles inscribed in segments.*
At Right Angles (4).
pp. 22-26.

## D

De, Prithwijit
(2019)
*A geometric exploration.*
At Right Angles (4).
pp. 90-92.

De, Prithwijit and Shirali, Shailesh
(2019)
*Problems for the Senior school.*
At Right Angles (4).
pp. 87-89.

De, Prithwijit and Shirali, Shailesh
(2019)
*Problems for the senior school.*
At Right Angles (5).
pp. 77-80.
ISSN 2582-1873

## G

G. R., Veena
(2019)
*The gap between ‘HOW’ and ‘WHY’ in mathematics….*
At Right Angles (4).
p. 54.

Ghosh, Jonaki
(2019)
*Exploring fractals : the geogebra way.*
At Right Angles (4).
pp. 77-83.

Ghosh, Jonaki B.
(2019)
*The game of craps.*
At Right Angles (5).
pp. 66-73.
ISSN 2582-1873

## J

Jagadeeshan, Shashidhar
(2019)
*From regular pentagons to the icosahedron via the golden ratio - part I.*
At Right Angles (4).
pp. 5-9.

Jha, Shreyan
(2019)
*Explorations on triangles with integer sides.*
At Right Angles (5).
pp. 41-42.
ISSN 2582-1873

## K

Katkar, Laxman N.
(2019)
*Extensions of the theorem of Pythagoras.*
At Right Angles (5).
pp. 11-16.
ISSN 2582-1873

Krishnamoorthy, Usha
(2019)
*Data, perception and ignorance.*
At Right Angles (4).
pp. 104-112.

## M

Miraj, Rahil
(2019)
*Radii of in-circle and ex-circles of a right- angled triangle.*
At Right Angles (4).
pp. 27-30.

Murthy, M. Narasimha
(2019)
*Brahmagupta’s theorem.*
At Right Angles (5).
p. 27.
ISSN 2582-1873

## N

Nair, Vinay
(2019)
*A mathematical pilgrimage : Ramanujan yatra.*
At Right Angles (5).
pp. 5-10.
ISSN 2582-1873

Nandi, Avipsha
(2019)
*Orthocentre of a triangle and its distance from any point in the plane.*
At Right Angles (5).
pp. 58-65.
ISSN 2582-1873

## P

Prakash, Anand
(2019)
*A modified pascal triangle.*
At Right Angles (5).
pp. 37-40.
ISSN 2582-1873

## R

R., Haragopal
(2019)
*‘CuRe’ triplets.*
At Right Angles (4).
pp. 45-47.

Radhu, Jaleel
(2019)
*A challenging geometric construction problem.*
At Right Angles (5).
pp. 81-82.
ISSN 2582-1873

Raghunath, Sabitha and Bhansali, Sneha
(2019)
*π enters the 5th class.*
At Right Angles (4).
pp. 33-37.

Ramachandran, A.
(2019)
*DIY problems for the middle school.*
At Right Angles (4).
pp. 84-86.

Ramachandran, A.
(2019)
*Generalising the divisibility tests of 9 and 11.*
At Right Angles (5).
pp. 32-33.
ISSN 2582-1873

Ramachandran, A.
(2019)
*A path to π.*
At Right Angles.
pp. 31-32.

## S

Shirali, Padmapriya
(2019)
*Percentages.*
At Right Angles (5).
pp. 1-12.
ISSN 2582-1873

Shirali, Padmapriya
(2019)
*Ratio.*
At Right Angles (4).

Shirali, Shailesh
(2019)
*Adventures in problem solving.*
At Right Angles (4).
pp. 96-101.

Shirali, Shailesh
(2019)
*How to prove it.*
At Right Angles (4).
pp. 70-76.

Shirali, Shailesh
(2019)
*How to prove it.*
At Right Angles (5).
pp. 51-57.
ISSN 2582-1873

Shirali, Shailesh
(2019)
*The constants of mathematics - part IV : yet more on the remarkable number e.*
At Right Angles (4).
pp. 10-18.

Shirali, Shailesh
(2019)
*A counter-intuitive Pythagorean surprise.*
At Right Angles (4).
pp. 19-21.

Shirali, Shailesh
(2019)
*A triangle area problem.*
At Right Angles (4).
pp. 93-95.

Sircar, Swati
(2019)
*Exploring properties of addition and multiplication with integers.*
At Right Angles (4).
pp. 59-65.

Sircar, Swati
(2019)
*Low floor high ceiling tasks : in-cyclic quads.*
At Right Angles (5).
pp. 47-50.
ISSN 2582-1873

Sircar, Swati
(2019)
*Tearout : fun with dot sheets.*
At Right Angles (4).
pp. 55-58.

Sircar, Swati
(2019)
*Tearout : isometric sketches and more.*
At Right Angles (5).
pp. 43-46.
ISSN 2582-1873

Sircar, Swati and Titus, Sneha
(2019)
*Joining the dots...*
At Right Angles (4).
pp. 48-53.

## T

Takker, Shikha
(2019)
*Understanding learners’ thinking through an analysis of errors.*
At Right Angles (4).
pp. 38-44.

## V

Venkatasubban, Rajatadri
(2019)
*An unusual proof of the centroid theorem.*
At Right Angles (5).
pp. 34-36.
ISSN 2582-1873