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Cyclic Quadrilateral: Quick Warm Up (GoGeometry Action 149!)

STUDENTS:

Interact with the applet below for a few minutes. As you do, be sure to move the LARGE POINTS around before each successive "re-sliding" of the slider. Please answer the questions that follow.

1.

How would you describe what you see in words? Try as best as you can.

2.

WHY does this phenomenon always hold true?

Quick (Silent) Demo