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What is 1 + 3?
A 3-sided figure
A 4-sided figure
A 5-sided figure
A 6-sided figure
A 7-sided figure
An 8-sided figure
A 9-sided figure
A 10-sided figure
A quadrilateral with one pair of parallel sides
A quadrilateral with 2 pairs of parallel sides
A polygon in which all of the diagonals lie in the interior of the polygon.
A polygon in which any point of a diagonal lies in the exterior of the polygon.
A segment connecting any two nonconsecutive vertices of a polygon
A plane figure formed by a finite number of segments.
A convex polygon that is both equilateral and equiangular