 ### Large Trapezoids for Pattern Block Set

Three large trapezoids for pattern block set. ### Large Trapezoids for Pattern Block Set

Three large trapezoids for pattern block set. ### Small Trapezoids for Pattern Block Set

Fourteen small trapezoids for pattern block set. ### Polyhedron With Pentagon Bases

Illustration of a pentagonal polyhedron that is formed by having two parallel congruent pentagonal bases… ### Polyhedron With Pentagon Bases

Illustration of a pentagonal polyhedron that is formed by having two parallel congruent pentagonal bases… ### Polyhedron With Pentagon Bases

Illustration of a pentagonal polyhedron that is formed by having two parallel congruent pentagonal bases… ### Trapezium

Illustration of a trapezium, a quadrilateral having no two sides parallel. The diagonal is labeled in… ### Trapezoid

Trapezoid with angles and height labeled. ### Area of a Trapezoid

Illustration of a trapezoid with altitude a and bases b and b' used to demonstrate that the area is… ### Line Bisecting Trapezoid Sides

Illustration used to prove the theorem "The line bisecting one of the non parallel sides of a trapezoid… ### Isosceles Trapezoid With Equal Diagonals

Illustrations of an isosceles trapezoid with equal diagonals drawn. ### Trapezoid With Labels

An illustration of a trapezoid with 4 sides and height labeled. ### Trapezoid With Lines Joining the Midpoints of the Diagonals

Illustrations of a trapezoid with a line joining the midpoints of the diagonals. ### Trapezoid With Line Segment Parallel to One Side

Illustrations of a trapezoid with a line segment drawn parallel to one side ### Trapezoids With Lines Joining Midpoints

Illustrations to show trapezoids with lines joining the midpoints of the sides of any quadrilateral,… ### Trapezoid With Diagonals

Illustrations of a trapezoid with diagonals drawn.