Triangles by Isabel

http://www.historyforkids.org/scienceforkids/math/geometry/triangle.htm
http://www.coolmath4kids.com/math_puzzles/t2-triangle.html

There are 7 different  kinds  of triangles. Some triangles are : Equilateral , Obtuse, Right, and Acute. Triangles can be classified  by the length of their  sides.

Triangles can also be classified by the measure of their angles. Triangles are 180 degrees. (side + side + side = 180 degrees)  Triangles are a 3 sided polygon. Triangles are one of the basic shapes in geometry.  An Equilateral  triangle has three sides with equal legth. An  Obtuse tirangle has one  obtuse angle. A Right triangle has one right angle .

An Acute triangle has 3 acute angles. Triangles are very interesting!