Properties of Quadrilaterals Parallelograms 1. Opposite sides are parallel 2. Opposite sides are congruent 3. Opposite angles are congruent 4. Consecutive angles (angles that are next to each other) are supplementary(= 180 degrees) 5. Diagonals bisect each other. Rectangle 1. Opposite sides are parallel 1. Opposite sides are parallel 2. Opposite sides are parallel 3. Opposite angles are congruent 4. Consecutive angles are supple mentary 5. Diagonals bisect each other 6. Diagonals are Congruent Rhombus 1. Opposite sides are parallel 2. Opposite sides are congruent 3. Opposite angles are congruent 4. Consecutive angles are supplementary 5. Diagonals bisect each other 6. Diagonals are congruent 7. Diagonals are perpendicular Square 1. oppostie sides are parallel 2. opposite sides are congruent 3. opposite angles are congruent 4. Consecutive angles are supplementary. 5. diagonals bisect each other 6. Diagonals are congruent. 7. sdiagonals are perpendicular. 8. diagonals bisect opposite angles. Trapezoid 1. Exactly ONE pair of parallel sides. 2. The Median is halfway between the 2 bases and is found by using:

(base 1 + base 2) / 2 Isosceles Trapezoid 1. exactly ONE pair of parallel sides 2. the median is found by using:

(b1 + b2) / 2 3. legs are congruent 4. base angles are congruent 5. diagonals are congruent

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# Properties of Quadrilaterals

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