Welcome Geometry Students!

Hey Geometry Class!

"All About Geometry" is a blog site to help you succeed in this course. I will post lesson reviews and key concepts that you can use while completing homework assignments and studying for quizzes/exams.

You can also post questions on here - anything within the blog rules is fair game. You can ask for further explanation on a concept or even for help on a homework problem. I promise to address all relevant and appropriate questions either in class, on this site, or both.

Notice that newest posts are at the top of the page. In some cases you may want to look at older posts to master concepts that newer posts build upon.

Take a look around and enjoy!

Monday, February 22, 2010

Orthocenter


The altitudes of a triangle are concurrent (i.e. they meet at a single point). Their point of intersection is called the orthocenter.

The picture above shows the orthocenter of an acute triangle (click on the picture for a larger view). Where would the orthocenter be on an obtuse triangle? Where would it be on a right triangle?

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