Parallel lines - Always the same distance apart and never touch., Perpendicular lines - Cross or meet each other, but always at a right angle., Intersecting lines - Cross or meet each other, but don't make a right angle., Parallelogram - There are two pairs of opposite parallel sides., Rectangle - Opposite sides are parallel and the same length. There are four right angles., Trapezoid - There is only one pair of parallel sides., Rhombus - There are two pairs of parallel sides. All sides are the same length., square - All sides are the same length. There are four right angles,

Classifying Quadrilaterals

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