A quadrilateral with only 1 pair of opposite angles parallel and the other pair of opposite sides congruent
Isosceles triangle
A quadrilateral with 2 pairs of opposite sides parallel
Parallelogram
A quadrilateral with only one pair of opposite sides parallel
Trapezoid
A quadrilateral that is both a rectangle and rhombus
Square
A quadrilateral with 4 congruent sides
Rhombus
A quadrilateral with 4 right angles
Rectangle
A quadrilateral with 2 pairs of congruent consecutive sides
Kite
Segments that join opposite vertices in a quadrilateral
Diagonals
The segments joining the midpoints of the nonparallel sides of a trapezoid
Midsegment
That parallel sides of a trapezoid
Bases