Interior angles in a triangle add up to 180 ... used are useful for solving all kinds of other geometry problems too. There are two rules to remember. First, when a diagonal line is drawn ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to ...

To nail hanging art every time (literally!), you might want to follow the "triangle rule" to give your wall a polished and ...