Understanding Trapezoids

The video tutorial introduces trapezoids, defining them as quadrilaterals with one pair of parallel sides. It explains their properties, including angles and sides, and distinguishes between right and isosceles trapezoids. The tutorial also covers how to calculate the area and perimeter of trapezoids. Finally, it answers the initial question about the number of trapezoids in a picture and provides additional resources for further learning.

What is a defining characteristic of a trapezoid?

• It has two pairs of parallel sides.

• It has one pair of parallel sides.

• It has no parallel sides.

• It has all sides of equal length.

Which of the following is true about the angles in a trapezoid?

• The angles are all equal.

• The sum of the interior angles is 180 degrees.

• The angles are all right angles.

• The sum of the interior angles is 360 degrees.

What is the median of a trapezoid?

• A line parallel to the non-parallel sides.

• A segment connecting the midpoints of the legs.

• A segment equal to the height of the trapezoid.

• A line connecting two opposite vertices.

What is the relationship between the median and the bases of a trapezoid?

• The median is equal to the sum of the bases.

• The median is half the sum of the bases.

• The median is twice the length of the bases.

• The median is the difference between the bases.

Which type of trapezoid has two right angles?

• Isosceles trapezoid

• Right trapezoid

• Equilateral trapezoid

• Scalene trapezoid

In an isosceles trapezoid, what is true about the legs?

• The legs are parallel.

• The legs are equal in length.

• The legs are perpendicular to the bases.

• The legs are unequal in length.

What is a unique property of the diagonals in an isosceles trapezoid?

• They are perpendicular.

• They are parallel.

• They are unequal in length.

• They are equal in length.

How do you calculate the area of a trapezoid?

• Base plus height

• Half the sum of the bases times the height

• Sum of all sides

• Base times height

What is the formula for finding the perimeter of a trapezoid?

• Add the lengths of all four sides

• Add the lengths of the two bases

• Multiply the length of the base by the height

• Subtract the length of the legs from the bases

How many trapezoids are in the original picture discussed in the video?

• Eight

• Seven

• Six

• Five