Classifying Quadrilaterals by Parallel Sides

The video tutorial explains how to classify quadrilaterals based on the number of parallel sides. It introduces trapezoids as quadrilaterals with one pair of parallel sides and explains why certain shapes do not qualify as trapezoids. The tutorial also covers parallelograms, which have two pairs of parallel sides, and concludes with a summary of the classification process.

What property do two parallel lines share?

• They are always perpendicular

• They intersect at one point

• The distance between them never changes

• They form a closed shape

What defines a quadrilateral?

• A shape with two pairs of parallel sides

• A shape that is not closed

• A shape with one pair of parallel sides

• A shape with four sides

What is a trapezoid?

• A quadrilateral with no parallel sides

• A polygon with more than four sides

• A quadrilateral with two pairs of parallel sides

• A quadrilateral with exactly one pair of parallel sides

How can you identify a trapezoid among other shapes?

• By looking for exactly one pair of parallel sides

• By checking for one closed path

• By finding two pairs of parallel sides

• By counting the number of sides

Why is a shape with one pair of parallel sides not always a trapezoid?

• If it has more than four sides

• If it is not a closed shape

• All of the above

• If it is not a quadrilateral

What makes a shape a polygon?

• Having two pairs of parallel sides

• Having one closed path

• Being a quadrilateral

• Having parallel sides

Why can't a shape be considered a quadrilateral if it's not closed?

• Because it can't have any sides

• Because it's not a polygon

• Because it can't have parallel sides

• Because it doesn't have four sides

What disqualifies a shape from being a polygon?

• Having sides that are not parallel

• Having parallel sides

• Not having a closed path

• Having less than four sides

What is a parallelogram?

• A quadrilateral with no parallel sides

• A shape that is not closed

• A quadrilateral with one pair of parallel sides

• A quadrilateral with two pairs of parallel sides

Which of the following is true about parallelograms?

• They have exactly one pair of parallel sides

• They have two pairs of parallel sides

• They have no parallel sides

• They are not polygons