May 27, 2008

 A trapezoid is a quadrilateral with two parallel sides (called bases) and two non- parallel sides (called legs)

 …which is the isosceles trapezoid.  In the isosceles trapezoid, the leg are equal in length and the base angles are congruent.

 A line segment connecting the midpoints of the legs of a trapezoid.  The median is parallel to the bases.  Its length is the average of the two bases.

 (b 1 +b 2 )/2 * h

 A= 100, b 1 = 5, b 2 =15, h=?  A= ?, b 1 = 12x, b 2 =20x, h=9

 m=median  A=120, b 1 = 5, b 2 =15, h=?, m= ?  A= 200, b 1 = ?, b 2 =15, h=10, m=?

 Use the diagram to help find the values.  A=  b 1 = 5  b 2 =15  h=  m=

 Use the diagram to help find the values.  A=  b 1 = 5  b 2 =15  h=  m=