Search Me

Recent Posts
 Girls’ Angle Bulletin, Volume 8, Number 3
 We’ve Got Snowball Problems
 Happy New Year 2015!
 Girls’ Angle Bulletin, Volume 8, Number 2
 Go Digital! A Crossword Puzzle Raffle
 Girls’ Angle Bulletin, Volume 8, Number 1
 Multiplication Sculptures and Sums of Cubes
 Girls’ Angle Bulletin, Volume 7, Number 6
 Marion Walter’s Theorem Via Mass Points
 Girls’ Angle Bulletin, Volume 7, Number 5
 Cubes in onepoint perspective
 Girls’ Angle Bulletin, Volume 7, Number 4
Categories
 applied math (3)
 Contest Math (23)
 gender issues (9)
 math (89)
 Math Education (74)
 Uncategorized (14)
 WIM videos (4)
Archives
 February 2015 (2)
 January 2015 (1)
 December 2014 (2)
 October 2014 (1)
 September 2014 (1)
 August 2014 (1)
 July 2014 (1)
 June 2014 (2)
 May 2014 (1)
 February 2014 (1)
 January 2014 (4)
 December 2013 (1)
 November 2013 (2)
 September 2013 (2)
 August 2013 (1)
 July 2013 (2)
 June 2013 (1)
 May 2013 (1)
 April 2013 (3)
 March 2013 (1)
 February 2013 (2)
 January 2013 (2)
 December 2012 (2)
 November 2012 (2)
 October 2012 (3)
 September 2012 (8)
 August 2012 (10)
 July 2012 (7)
 June 2012 (3)
 May 2012 (3)
 April 2012 (7)
 March 2012 (4)
 February 2012 (3)
 December 2011 (4)
 November 2011 (7)
 October 2011 (11)
 September 2011 (13)
 August 2011 (16)
Everything Math
AIME angles arctangent area calculus CEO chocolate circles Coach Barb combinatorics complex numbers computation conformal crossword cubes dates distance divisibility Emily Riehl errors exponentials Fermat's little theorem geometry Girls' Angle Girls' Angle Bulletin girls and math infinite geometric series Jean Pedersen Julia Zimmerman Kate Jenkins learning linear algebra mass points math math contests Math Doctor Bob mathematicians math event math magazine math prize for girls math problems math trivia math videos matrices mental computation multiplication optimization origami parabolas perpendicular perspective drawing puzzle Pythagorean theorem Pythagorean triples quadratic Radmila Sazdanovic raffle contest roots science secret messages similarity sine stable marriage algorithm stable marriage problem stereographic projection sumit sums of powers tennis triangles trigonometry USWIM variables Vieta's formulas volume Women's History Month
Tag Archives: geometry
We’ve Got Snowball Problems
Current weather in New England makes it hard to not think about snow. So here are two snowball inspired math problems. We welcome your solutions (send to girlsangle “at” gmail.com). Perhaps we’ll post solutions when the last traces of snow have … Continue reading
Cubes in onepoint perspective
This post is a reply to Jamie’s comment on Drawn to Math: Would anyone know how to construct a cube in one point perspective? This is an excellent question because it isolates an important, simplified situation that enables one to study key aspects of … Continue reading
Posted in applied math, math
Tagged cubes, geometry, onepoint perspective, perspective drawing, similarity
Leave a comment
Girls’ Angle Bulletin, Volume 7, Number 4
The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. The cover features a planar configuration by Leah Berman, associate professor of mathematics at the University of Alaska Fairbanks. There are 240 … Continue reading
Posted in math, Math Education
Tagged angle, configurations, geometry, Leah Berman, Marie Vitulli, Nadine Alise, Pythagorean triples, Quintetra, rhombic triacontahedron, Thomas Moore, x to the x
1 Comment
Girls’ Angle Bulletin, Volume 7, Number 2
The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. In Bisection Envelopes, a paper to appear in the journal Involve, Noah FechtorPradines proves many interesting properties of the envelope of the set of … Continue reading
2013 AIME 2 Problem 10
I’ve been asked about the following problem from the 2013 AIME 2 a few times, so I decided to blog a couple of solutions for it: Given a circle of radius , let A be a point at a distance from … Continue reading
The Pythagorean Theorem: Is It Proven?
Recently at the Girls’ Angle club, a girl asked: Has the Pythagorean theorem been proven? That was a terrific question! Unfortunately, I didn’t have time to discuss it as well or as fully as I would have liked. A lot of … Continue reading
Posted in math
Tagged geometry, math, noneuclidean geometry, proof, Pythagorean theorem, science
2 Comments
Bouncing in a UShaped Gallery
Consider the Ushaped hallway illustrated above. All angles are right angles and the numbers indicate the lengths of various walls. The figure is not drawn to scale. The problem is to send a point sized billiard ball located at the … Continue reading