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 Challenge
 Convex:  If, when you join any two points inside a figure, the resulting line segment also lies inside the figure, then the figure is convex.

Sum of Angles in a Polygon: Explore the relationship between the number of sides of a polygon and the sum of its interior angles.

Sum of Exterior Angles: Determine the sum of the exterior angles in any polygon.

Medial Polygons: Investigate the characteristics of a polygon that is generated by connecting the midpoints of consecutive sides of a polygon.

Quadrilaterals Inscribed in Quadrilaterals: Explore properties of quadrilaterals constructed using the midpoint of given quadrilaterals.

Quadrilaterals Inscribed in Polygons: How many quadrilaterals can be constructed using the vertices of polygons?