Lesson 2.17: Trapezoid & Kites 1 Lesson 6-5 Trapezoids and Kites.
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Transcript of Lesson 2.17: Trapezoid & Kites 1 Lesson 6-5 Trapezoids and Kites.
Lesson 2.17: Trapezoid & Kites 1
Lesson 6-5
Trapezoids and Kites
Lesson 2.17: Trapezoid & Kites 2
TrapezoidA quadrilateral with exactly one pair of parallel sides.Definition:
BaseLeg
An Isosceles trapezoid is a trapezoid with congruent legs.
Trapezoid
The parallel sides are called bases and the non-parallel sides are called legs.
Isosceles trapezoid
Lesson 2.17: Trapezoid & Kites 3
Properties of Isosceles Trapezoid
A B and D C
2. The diagonals of an isosceles trapezoid are congruent.
1. Both pairs of base angles of an isosceles trapezoid are congruent.
A B
CD
Base Angles
AC DB
Lesson 2.17: Trapezoid & Kites 4
The median of a trapezoid is the segment that joins the midpoints of the legs.
The median of a trapezoid is parallel to the bases, and its measure is one-half the sum of the measures of the bases.
Median
1b
2b
1 21 ( )2
median b b
Median of a Trapezoid
Find the length of the median.
Find the value of x.
Homework Page 334- 335
• # 9-25