3 TrapezoidIs a quadrilateral with only one set of parallel sides. (bases)Base1heightBase2
4 Isosceles TrapezoidIs a quadrilateral with one set of parallel sides and the other two sides are congruent but not parallel.
5 Isosceles Trapezoid One set of opposite sides are parallel. One set of opposite sides are congruent but not parallel.Base angles are congruent.A Base1 + Base2 angle equal 180°Diagonals are congruent but do not bisect each other.