A tutorial to explore the rotation of shapes around a point.
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1 - Press the button above to start the applet.
2 - Use the top slider to select the shape you want to study. There are 4 choices: a right triangle, a scalene triangle, a rectangle and a parallelogram.
3 - Use the formulas found above to check the area of the polygon for different values of n.
4 - When n increases, what happens to the three areas: that of the circumscribed circle, the polygon and the inscribed circle? See problem 4 in polygons problems.