What Kind of Quadrilateral is This? (Part 1)

[b]There are four activities (parts) to this discovery investigation. This is part 1/4. [br][color=#0000ff]The link to this lesson activity can be found above the GeoGebra task applet (see below.) [/color][/b]
[b][color=#0000ff][url=https://docs.google.com/document/d/1YlPz3ywcAaXV7q3EGnOI-I6Y7RqfUFEkbREZPTzxeH4/edit?usp=sharing]What Kind of Quadrilateral is This? (Part 1)[br][br][/url][/color]The link for part 2/4 of this lesson activity can be found below the applet. [/b]
Use this Applet for PART 1.
Link to Part 2: [br][br][b][color=#0000ff][url=https://www.geogebra.org/m/r53GD7C9]What Kind of Quadrilateral is This? (Part 2)[/url][/color][/b]

Information: What Kind of Quadrilateral is This? (Part 1)