Question

1. add a line to the given diagram to create triangles that can be used for reasoning about the figure.

Explanation:

Step1: Identify the polygon

The given figure is a quadrilateral.

Step2: Recall triangle - creation method

To create triangles from a quadrilateral, we can draw a diagonal.

Step3: Draw the diagonal

Draw a line segment connecting two non - adjacent vertices of the quadrilateral.

Answer:

Draw a line segment connecting two non - adjacent vertices of the given quadrilateral.