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

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Presentation transcript:

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

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.

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)

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

Assigment #42 Homework #42 p. 360 9-27 odd, 34, 35