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## Problems from the Book

Problems from the Book

Dr. Titu Andreescu, Director of the Metroplex Math Circle, has co-authored yet another book designed for students and coaches preparing for high-school-level mathematical Olympiads, national or international.

## UT Dallas

Participants in the Metroplex Math Circle are very grateful for the extensive support they receive from the University of Texas at Dallas. Some of UTD’s founding principles help to explain why it is such a perfect home for one of the country’s leading Math Circles.

In 1969 the University’s founders argued that “to grow industrially, the region (Texas) must grow academically; it must provide the intellectual atmosphere which will allow it to compete in the new industries dependent on highly trained and creative minds.” With this charge in mind, UT Dallas’ mission statement charges the university to serve “the Metroplex and the State of Texas as a global leader in innovative, high quality science, engineering, and business education and research.”

## Week of 11/17 – Dr. Arthur Benjamin!

In November Metroplex Math Circle will help sponsor a special presentation from Dr. Arthur Benjamin! Dr. Benjamin is a distinguished mathematician at Harvey Mudd but also a very entertaining “mathemagician” whose shows are commissioned by many corporations and institutions around the country.

Here is his presentation at the prestigious TED conference:

## Problems – Geometric Combinatorics

Last semester we were very fortunate to have Dr. Tatiana Shubin join us and present on Geometric Combinatorics. Following are some of the problems she presented:

1. Prove that if each three of n points in a plane can be enclosed in a circle of radius 1, then all n points can be enclosed in such a circle.

2. Given 7 lines in a plane, if no two of them are parallel to one another prove that there exists a pair of lines with the angle between them less than 26 degrees

3. How many acute inner angles can a convex n-gon have?

If you would care to answer them in the comments please do. These are just a sampling of the interesting problems and topics to be found at Metroplex Math Circle.

## MMC Directions

For anyone new to MMC this session I wanted to provide the following link to a Google map for directions. We meet in room 2.410 of the Engineering and Computer Sciences building on the campus of the University of Texas at Dallas (corner of Rutford and Drive A). Parking is available just South of the building near the activities center.

Directions.

## Richard Rusczyk – September 20

We are very excited to kick off the 2008-2009 season of Metroplex Math Circle with a presentation by Mr. Richard Rusczyk founder of The Art of Problem Solving. Following is some information on Richard. As we get closer to the 20th we will be providing more information on his talk.

AoPS Incorporated was founded by Richard Rusczyk in 2003 to create interactive educational opportunities for avid math students. Richard Rusczyk is one of the co-authors of the Art of Problem Solving textbooks, author of Art of Problem Solving’s Introduction to Algebra and Introduction to Geometry textbooks, one of the co-creators of the Mandelbrot Competition, and the Director of the USA Mathematical Talent Search. He was a participant in National MATHCOUNTS, a three-time participant in the Math Olympiad Summer Program, and a USA Mathematical Olympiad winner (1989). He graduated from Princeton University in 1993, helped inaugurate ESPN’s SportsFigures program, and worked as a bond trader for D.E. Shaw & Company for four years. AoPS marks Richard’s return to his vocation – educating motivated students.