## Freehand Geometry: Problem of the Week (December 14 – December 21, 2013)

Triangles in a triangle Triangle ABC is a right triangle with right angle at B. The legs are of length 15 and 8. Point D is on the hypotenuse of the triangle such...

## Painless Trigonometry: (December 7 – December 14, 2013)

Square of a Sine What is the sum of sin21+sin22 +. . .+sin289 ?   Comment your answer below. Note: I am the only one who can see your comments. You are only...

## Stunning Algebra: (December 7 – December 14, 2013)

Prime Roots The x-intercepts of the equation y=x2-30x+k are prime numbers. What is/are the value(s) of K?   Comment your answer below. Note: I am the only one who can see your comments....

## Freehand Geometry: (December 7 – December 14, 2013)

Sum of Infinite Area A regular hexagon has a side 6 cm. A smaller hexagon was drawn by connecting the midpoints of the side of the larger hexagon. The process is repeated continuously....

## Olympiad Math (December 7 – December 14, 2013)

Day of the Week Today is Saturday, December 07, 2013. What day of the week days from now will fall?   Comment your answer below. Note: I am the only one who can...

## Equation of a Circle

In this topic we will learn how to create an equation of a circle with different given. Being familiar of the method will boost our speed and accuracy. Most of the problems we encounter...

## Division of Line Segment

This topic is really easy. This is just a matter of small common sense and your skill to substitute. Formula derivation: Consider points A(x1,y1) and B(x2,y2) is divided by point P(xp,yp) to a ratio...