Square, Rhombus - Four congruent sides, Parallelogram, Square, Rectangle - Opposite sides are congruent and parallel, Square, Rectangle - All four angles are congruent and measure 90 degrees, Square - Diagonals are congruent and bisect each other at right angles, 4 lines of symmetry, Rectangle - Diagonals are congruent and bisect each other, Trapezoid - Quadrilateral with exactly one pair of parallel sides, Bases - Parallel sides of a trapezoid, Legs - Nonparallel sides of a trapezoid, Isosceles Trapezoid - Legs of equal length and congruent base angles, 1 line of symmetry, Quadrilateral - Polygon with four sides, Parallelogram - Opposite angles are congruent, Diagonals bisect each other and one diagonal divides the figure into two congruent triangles, Rhombus - Opposite sides are parallel, Diagonals bisect each other at right angles, Rectangle, Rhombus - 2 lines of symmetry, 360 degrees - Sum of the measures of the interior angles of a quadrilateral,

7.6ab - Quadrilaterals

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