A trapezoid is a quadrilateral with two sides parallel and two sides non-parallel, with the parallel sides called the bases and non-parallel sides called the legs. If the legs of a trapezoid are congruent, it is an isosceles trapezoid, and its properties include that the base angles are congruent and the diagonals bisect each other.

1. Trapezoid
and its
Properties

3. Trapezoid is a
quadrilateral which
has two sides
parallel and the
other two sides
non-parallel.

5. Bases are the parallel
sides.
Legs are the non parallel
sides.
Base Angles of a trapezoid
are two consecutive angles
whose common side is the
base.

7. If the legs of a
trapezoid are
congruent, then it
is an Isosceles
trapezoid

8. The following
theorems state
the properties of
an Isosceles
trapezoid

11. SINO SI
MAHATMA
GANDHI?

13. Using the properties
of Isosceles
trapezoid

14. 1. Find the m <A

15. 2.Find the value of X so that
ABCD is isosceles
AD= 12X – 11
BC = 9X - 2

16. 3. Find the value of EF