Lesson 4.2: Angle Properties in Triangles and Other Polygons

Lesson 4.2: Angle Properties in Triangles and Other Polygons

Design and construction include a lot of different shapes, but the simplest shapes are enclosed figures made by connecting a number of straight line segments. These resulting shapes are called polygons. Of the polygons, the triangle is the most basic and has only three sides. Any polygon can be broken down into triangles, so a strong understanding of triangles will open the door to understanding other polygons.