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Subscribe to Homeschool Math Newsletter - filled with math teaching information  February 2010 newsletter
Latest from my blog This is where you'll find the latest happenings, news, & ideas in math teaching Math teaching videos My videos at YouTube show you how to teach concepts.
Multiply & divide decimals by 10, 100, or 1000
Hover your mouse above to open a menu of various worksheets you can generate for free! Advice, reviews, and resources to help you choose a math curriculum! Games you can play online, interactive tutorials, fun math websites and more. Arranged by topic/level for ease of use. Learn how to TEACH concepts or about general concerns in math education. Reviews In-depth reviews of math products Math help & tutoring A list of free message boards, math help websites, and online tutoring services. My Amazon Store See some math products I recommend. I have two games on my site, plus links to many. |
The ideas in this geometry lesson are taken from the Geometry ebook that I sell at MathMammoth.com. This lesson plan does not contain all the problems the Geometry ebook does. Altitude of a triangle
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| The altitude of a triangle is a line
segment from one vertex of a triangle
to the opposite side so that the line
segment is PERPENDICULAR to the side.
Look at the pictures. In other words, (1) it starts at a vertex and (2) is perpendicular to the side. Note how the altitude of an obtuse triangle can fall outside of the triangle. |
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| You can draw the altitude from ANY vertex of the triangle. | In fact, to
every triangle you can draw three different altitudes. Note in the last picture how amazingly they all three intersect in the same point! |
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Example problem types
1. Draw one altitude to each of the triangles. You can choose which vertex you want to draw it from.
[Pictures available in the ebook]
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Copyright 2003-2010 Maria Miller
http://www.homeschoolmath.net/