Before you begin:[br][br]Feel free to move this quadrilateral's vertices (corners) wherever you'd like. [br][b][color=#ff0000]You can control the size of the red exterior angle by using the red slider.[br][/color][color=#1e84cc]You can control the size of the blue exterior angle by using the blue slider. [br][/color][/b][br]This applet works best if this quadrilateral is kept [b]convex[/b]. If you don't remember what this means, [br][url=https://www.geogebra.org/m/knnPDMR3]click here for a refresher[/url]. [br][br]Interact with the applet for a minute or two. [br]Then answer the question that follows.