How do you describe how to join triangles to make quadrilaterals? - Answers

To join triangles to make quadrilaterals, you can align two triangles along one of their edges, ensuring that the edges match perfectly. By combining the two triangles this way, their adjacent sides form a new quadrilateral. You can also use multiple triangles, ensuring that their edges continue to align to create a closed four-sided shape. Experimenting with different triangle orientations can yield various quadrilateral shapes.