Monday, July 14, 2008

Math Problems on geometry







The best part I like about math is geometry. Math problems about geometry train your observation skills and allow you to have a different view of buildings and other stuff in life.

First I want to talk about the sum of angles in a polygon with respect to the number of sides or corners.
Triangle is the simplest polygon, and it has three sides, with a total degree of 180.
Square has four sides, with a total degree of 360.
Pentagon has five sides, with a total degree of 540.
:
Then we find if the number of sides is “n”, the size of the sum of the angle would be:
(n - 2)*180
Try out yourself if it is right?!


Have you noticed that the degree of the angle is always the same respect to a line which is connected of two points on the circle? This is very simple to prove. Can you do that?

Also, for a 3-d product, such as a cube, there are length, width, and height. How many sides does it have? How many faces? How many corners?

Think more about math problems in your life, and you will find far more interesting things than you would find in the math classes! Make math your friend!