Three large trapezoids for pattern block set.

Large Trapezoids for Pattern Block Set

Three 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.

Fourteen small trapezoids for pattern block set.

Small Trapezoids for Pattern Block Set

Fourteen small trapezoids for pattern block set.

Illustration of a pentagonal polyhedron that is formed by having two parallel congruent pentagonal bases connected by an alternating band of triangles and trapezoids, unlike an antiprism that has an alternating band of only triangles.

Polyhedron With Pentagon Bases

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

Illustration of a pentagonal polyhedron that is formed by having two parallel congruent pentagonal bases connected by an alternating band of triangles and trapezoids, unlike an antiprism that has an alternating band of only triangles.

Polyhedron With Pentagon Bases

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

Illustration of a pentagonal polyhedron that is formed by having two parallel congruent pentagonal bases connected by an alternating band of triangles and trapezoids, unlike an antiprism that has an alternating band of only triangles.

Polyhedron With Pentagon Bases

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

Illustration of a trapezium, a quadrilateral having no two sides parallel. The diagonal is labeled in this illustration.

Trapezium

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

Trapezoid with angles and height labeled.

Trapezoid

Trapezoid with angles and height labeled.

Illustrations of a trapezoid.

Trapezoid

Illustrations of a trapezoid.

Illustration of a trapezoid with altitude a and bases b and b' used to demonstrate that the area is 1/2 the sum of the bases multiplied by the altitude.

Area of a Trapezoid

Illustration of a trapezoid with altitude a and bases b and b' used to demonstrate that the area is…

Illustration used to prove the theorem "The line bisecting one of the non parallel sides of a trapezoid and parallel to the bases bisects the other of the non parallel sides also."

Line Bisecting Trapezoid Sides

Illustration used to prove the theorem "The line bisecting one of the non parallel sides of a trapezoid…

Illustrations of an isosceles trapezoid with equal diagonals drawn.

Isosceles Trapezoid With Equal Diagonals

Illustrations of an isosceles trapezoid with equal diagonals drawn.

An illustration of a trapezoid with 4 sides and height labeled.

Trapezoid With Labels

An illustration of a trapezoid with 4 sides and height labeled.

Illustrations of a trapezoid with a line joining the midpoints of the diagonals.

Trapezoid With Lines Joining the Midpoints of the Diagonals

Illustrations of a trapezoid with a line joining the midpoints of the diagonals.

Illustrations of a trapezoid with a line segment drawn parallel to one side

Trapezoid With Line Segment Parallel to One Side

Illustrations of a trapezoid with a line segment drawn parallel to one side

Illustrations to show trapezoids with lines joining the midpoints of the sides of any quadrilateral, taken in order.

Trapezoids With Lines Joining Midpoints

Illustrations to show trapezoids with lines joining the midpoints of the sides of any quadrilateral,…

Illustrations of a trapezoid with diagonals drawn.

Trapezoid With Diagonals

Illustrations of a trapezoid with diagonals drawn.