Quadrilateral Family Tree

By: Jessica Doyle and Charlotte Sidman

Definitions-

Quadrilateral: A four sided figure.

• Closed four sided figure

Parallelogram: A four sided plane recticlinear figure with opposite sides parallel.

 

• diagonals bisect eachother
• opposite angles are congruent
• opposite sides are congruent
• consecutive angles are supplementary

Rectangle: A plane figure with four straight sides and four right angle, esp. one with unequal adjacent sides, in contrast to a square.

• opposite sides congruent
• opposite angles are congrunt
• consecutive angles are supplementary
• diagonals bisect each other
• all four angles are right
• diagonals are congruent

Rhombus: A parallelogram with opposite equal acute and obtuse angles and four equal sides.

• diagonals are perpendicular
• diagonals bisects a pair of opposite sides
• diagonals bisect eachother
• opposite angles are congruent
• opposite sides are congruent
• consecutive angles are supplementary

Square: A plane figure with four straight sides and four right angles. All sides and angles congruent.

• opposite sides congruent
• opposite angles are congrunt
• consecutive angles are supplementary
• diagonals bisect each other
• all four angles are right
• diagonals are congruent
• diagonals are perpendicular
• all sides congruent

Trapezoid: A type of quadrilateral with only one pair of parallel sides.
 

• only one pair of parallel sides
• leg angles are supplementary
• the midsegment is parallel to the two bases
• the midsegmenty is the average of the two bases

Now lets see that tree ONE more time :)