-Define the term polyon
-Define and se the reflectional symmetry and rotational symmetry
-Define the terms regular polygon, center of a regular plygon, central angle of a regular polygon, central angle of a regular polygon, and axis of symmetry.

Polygon: a plane figure formed from three or more segments so that each segment intersects exactly two other segments, one at each endpoint, and no two segments wigh a common endpoint are collinear.
Sides of the Polygon: segments of a polygon.
Vertices of the Polygon: Common endpoints of a Polygon.
Axis of Symmetry: a line that coincieds exactly with the preimage.
Equiangular polygon: a polygon where all angles are congruent.
Equilateral polygon: a polygon where all sides are congruent.
Regular Polygon: a polygon that is both equiangular and equilateral
Center of a Regular Polygon: the point of a polygon that is equidistant from all vertices of the polygon
Central Angle: a regular polygon that has an angle whose vertex is the center of the polygon and sides pass through two consecutive vertices.

Reflectional Symetry: A figure has reflectional symmetry if and only if its reflected image across the line coincedes exacly with the preimage.
Rotational Symmetry: A figure has rotational symmetry if ad only if it has at least one rotation image, not conting the rotation of images of 0° or the multiles of 360° that coincides with the original image.



-Define the terms quadrilateral, parallelogram, rhombus, rectangle, square, and trapezoid.
-Identify the properties of quadrilaterals and the relationsheps between the properties.

Qadrilateral: A four-sided polygon.l\
Trapezoid: A quadrilateral with one pair of parallel sides.
Parallelogram: A quadrilateral that has two pairs of parallel sides.
Rhombus: A quadrilateral with all of the sides congruent.
Rectangle: A quadrilateral that has 4 right angles
Square: A quadrilateral with all the sides congruent and four right angles.