[header] How to classify triangles [title] Measure each side of the 3 sides of the triangle using a ruler. [title] Place the ruler at the end of each line segment of the 3 lines in the triangle and measure to the opposite endpoint of each line. [title] Make note of the measurement for each of the 3 triangle sides. 
[title] Determine how the 3 sides compare in length. [step] Inspect to see if some lines are longer than others in length and if any of the lines are equal in length.