The Geometry of Triangles Definitions and formulas for the area of a triangle, the sum of the angles of a triangle, the Pythagorean theorem, Pythagorean triples and special triangles (the 30-60-90 triangle and the 45-45-90 triangle) Just scroll down or click on what you want and I'll scroll down for you!   examples of triangles area of a triangle sum of the angles of a triangle The Pythagorean Theorem special Pythagorean triples special triangles 45-45-90 & 36-60-90

Examples of triangles: The area of a triangle: The sum of the angles of a triangle: Always, always, ALWAYS!

The Pythagorean Theorem: This formula is for right triangles only! The sides, a and b, of a right triangle are called the legs, and the side that is opposite to the right (90 degree) angle, c, is called the hypotenuse.  This formula will help you find the length of either a, b or c, if you are given the lengths of the other two. Some special Pythagorean numbers: These are called Pythagorean triples.                    The reason that they are so special is that they are whole numbers -- none of those weird decimals, fractions or radicals!

Special Triangles: The 30-60-90 Triangle: If you have one side, you can use these formulas (and maybe a little algebra) to get the others. The 45-45-90 Triangle: If you have one side, you can use these formulas (and maybe a little algebra) to get the others.

.....:::::::::::::::  HELP SUPPORT COOLMATH  :::::::::::::::.....
:::::::  link to us   :::::::   advertise with us  :::::::

||  about us  ||  safe surfing  ||  privacy policy  ||  terms of use  ||  copyrights & fair use  ||

||  math  ||  math for ages 13-100  ||  math for kids  ||  math for teachers  ||  math for parents  ||  math games  ||  algebra  ||

||  math help lessons  ||  math practice problems  ||  online math dictionary  ||  algebra books  || math anxiety  ||

||  science  ||  free online games and puzzles  ||  continuing teacher education  ||

Thanks for visiting Coolmath.com
© 1997-2007 Coolmath.com, Inc.