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Polygons 1
Polygons 2
Trapezoids
Quadrilaterals
300 Parallelogram
100
A plane figure following the two conditions. (1) It is formed by three or more segments called sides, such that no two sides with a common endpoint are collinear. (2) Each side intersects exactly two other sides, one at each end point.
What is a Polygon?
100
A polygon that is not convex. Another term for nonconvex.
What is concave?
100
A segment that connects the midpoints of the legs of a trapezoid.
What is the midsegment of a trapezoid?
100
A quadrilateral with exactly one pair of parallel sides, called bases. The nonparallel sides are legs.
What is a trapezoid?
200

An angular point of a polygon, polyhedron, or other figure.

What is a vertex?
200
A polygon with all of its interior angles congruent.
What is an equilangular polygon?
200
The parallel sides of a trapezoid.
What is the bases of a trapezoid?
200
A parallelogram with four congruent sides.
What is a rhombus?
300
plural of vertex. 1 or more vertex.
What are vertices?
300
A polygon that is equilateral and equilangular.
What is a regular polygon?
300
Two pairs of angles whose common side is the base of a trapezoid.
What is the base angles of a trapezoid?
300
A parallelogram with four right angles.
What is a rectangle?
300
A quadrilateral with both pairs of opposite sides parallel.
What is a parallelogram?
400
A polygon  that no line containing a side of the polygon contains a pint in the interior of the polygon.
What is convex?
400
A segment that joins two nonconsecutive vertices of a polygon.
What is the diagonal of a polygon?
400
The nonparallel sides of a trapezoid.
What are the legs of a trapezoid?
400
A parallelogram with four congruent sides and four congruent angles.
What is a square?
500
A polygon that is not convex. Another word for concave.
What is nonconvex?
500
A polygon with all of its sides congruent.
What is an equilateral polygon?
500
A trapezoid with congruent legs.
What is an isosceles trapezoid?
500
A quadrilateral that has two pairs of consecutive congruent sides, but in which opposite sides are not congruent.
What is a kite?