Trapezoids and Kites

1
Trapezoids and Kites

• 9-4

2
Theorem 9-16

• Base angles of an isosceles trapezoid are
  congruent

Base Angles
Base Angles
3
Theorem 9-17

• The diagonals of an isosceles trapezoid are
  congruent.
• How can we prove AC DB if all we know is
  trapezoid ABCD is isosceles and AB DC?

B
C
A
D
4
The diagonals of a kite are perpendicular
5
Homework

• P 473 1-16,,24,28-30