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Parallelograms: Opposite Angles Theorem

Interact with the applet below for a few minutes. Drag the sliders to explore this parallelogram. Then, answer the questions that follow. Move the BIG WHITE POINTS anywhere you'd like! You can also adjust the size of the pink angle by using the slider.

1.

What do you notice about this parallelogram?

2.

What do you wonder about the parallelogram?