## flashcard

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quadrilateral

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4 sided polygon, commonly classified as trapezoids or parallelograms

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## terms list

quadrilateral

4 sided polygon, commonly classified as trapezoids or parallelograms

rectangle

a quadrilateral with 2 sets of parallel sides and 4 right angles

rhombus

a quadrilateral with 2 sets of parallel sides and 4 congruent sides (diamond)

square

a quadrilateral with 2 sets of parallel sides and 4 congruent sides and angles

trapezoid

a quadrilateral with 1 sets of parallel sides

parallelogram

a quadrilateral with 2 pairs of opposites that are parallel

rhombus = square when

if a rhombus has one right angle, it has 4 right angles and is a square

sum of quadrilateral angles

360 degress

opposite sides for a parrallelogram

are congruent

opposite interior angles for a parrallelogram

are congruent

consecutive interior angles for a parrallelogram

are supplementary

diagonals for a parrallelogram

bisect each other

each diagonal for a parrallelogram

divides into two congruent triangles

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