1. 6.6 Trapezoids
Quadrilateral with exactly 1 pair of parallel sides called bases.
Base
Leg
Base Angles

2. Isosceles Trapezoid
Theorem 6.18: Each pair of base angles of an isosceles trapezoid are .
Both legs are .
Theorem 6.19: The diagonals of an isosceles trapezoid are congruent.

3. Trapezoid
Median: Segment that joins the midpoints of the legs of the trapezoid.
Theorem 6.20: The median is parallel to the bases and is ½ the sum of the bases.
Median = ½ (b1 + b2)

4. Given trapezoid ABCD with median EF, find the value of x.21 E F
5x - 2 D C
Answer: x = 5

5. Try These – pages 359-360 #2-6 Answers 2. Trapezoid, parallelograms
3. RS || QT, QR not || ST, QRST is a trapezoid.
4. Isosceles, QR = 20, ST = 20
5. 4
6. mE = 56, mF = 56, mG = 124, mH = 124

6. Assigment #42
Homework #42 p odd, 34, 35