Properties of Trapezoid

Which of the following properties apply to Isosceles Trapezoids? (Select all that apply)

• Opposite angles are supplementary

• Only one pair off opposite sides are parallel

• Consecutive angles between parallel lines are supplementary

• Diagonals are perpendicular

What is the measure of angle S?

Solve for the value of x.

Solve for the missing angle measures.

Find CD

• 12

• 24

• 18

• 36

If EFGH is an isosceles trapezoid, EH = 4x - 27, FG = x + 9, EG = 3y +19, and FH = 11y - 21. Solve for x and y.

• x = 12

  y = 5

• x = 40

  y = 13

• x = 5

  y = 12

• x = 13

  y = 40

Find the value of x.

• 23

• 28

• 30

• Cannot be determined

Find the midsegment.

• 14

• 28

• 12

• 16

Interior angles of a trapezoid add up to _____

• 180

• 360

• 540

• None of these

The diagonals of an isosceles trapezoid are congruent.

• True

• False