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"6th Grade MathThematics Module 2. Section 1."

polygon a closed figure made from segments that are drawn on a flat surface and do not cross. A polygon can have3 or more sides. Some types of polygons are: pentagons (5 sides), hexagons (6 sides), octagons (8. sides), decagons (10 sides), etc.
parallel lines lines on a flat surface that do not meet
quadrilateral a polygon with four sides
trapezoid a quadrilateral with exactly one pair of parallel sides
parallelogram a quadrilateral with two pairs of parallel sides
rhombus a parallelogram with all sides the same length
regular polygon a polygon that has sides that are all of equal length and angles that are all of equal measure
congruent having the same size and shape
line symmetry a figure has line symmetry when it can be folded in half so that the two halves fit exactly on each other. The fold line is called the line of symmetry
Created by: MicahS