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Geometry 4 Sides

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Clipart illustrations of a variety of quadrilaterals. Quadrilaterals are closed two-dimensional geometric figures with four sides. The most common quadrilaterals are squares, rectangles, parallelograms, and trapezoids. Images include examples of concentric and inscribed quadrilaterals.


Area of Parallelogram
"From Figure 4 he sees a parallelogram equal to a rectangle of the same base and altitude. Cut out and paste in rectangle form." -Foster, 1921...
Area of Trapezoid
"The student sees the trapezoid is equal in area to a rectangle whose base is the average base of the trapezoid, and whose altitude is the same as that of the trapezoid." -Foster, 1921...
Area of Trapezoid
"The student sees the trapezoid is equal in area to a rectangle whose base is the average base of the trapezoid, and whose altitude is the same as that of the trapezoid." -Foster, 1921...
Concentric Rectangles, Circle Inside
Illustration of a circle inside of 2 concentric rectangles whose vertices are connected by line segments....
Diagonals, Parallelogram With
Illustration of a parallelogram with diagonals AC and BD intersecting at point O....
Figures, similar
2 squares that are similar figures...
Figures, similar
2 rectangles that are similar figures...
Magic Square
A square divided into equal squares, like a chessboard, in each of which is placed one of a series of consecutive numbers from 1 up to the square of the number of cells in a side, in such a manner tha...
Parallelogram
"In the diagram, let AB and AC represent two forces acting upon the point, A. Draw the two dotted lines to complete the parallelogram." — Avery, 1895...
Parallelogram
Parallelogram with angles labeled....
Parallelogram
Illustration of a parallelogram, a quadrilateral which has opposite sides parallel....
Parallelogram
An illustration of a parallelogram with vertices labeled....
Parallelogram, altitude and diagonal of
Illustration of a parallelogram with altitude and diagonal drawn....
Parallelogram, Area of
Illustration of parallelogram AEFC drawn two different ways with base b and altitude/height a used to prove the area is aXb....
Parallelogram, diagonals bisecting
Illustration of a parallelogram with diagonals drawn to show they bisect each other....
Parallelogram, dimensions of
Parallelogram with dimensions labeled. Parallelogram can be used to calculate area....
Parallelogram, dimensions of
Parallelogram with dimensions labeled. Parallelogram can be used to calculate area....
Parallelogram, lines from vertices to midpoints
Illustration to show that when lines from two opposite vertices of a parallelogram to the midpoints of the opposite sides are drawn, they trisect the diagonal....
Parallelogram, Relationship with rectangle
Parallelogram with dimensions drawn to show relationship to the area of a rectangle....
Parallelograms, equal
Illustration of a two equal parallelograms. Two parallelograms are equal, if two sides and the included angle of the one are equal, respectively, to two sides and the included angle of the other....
Polygon, 4-sided
Polygon consisting of 4 sides...
Polygon, quadrilateral
Quadrilateral polygon with diagonal drawn....
Polygons, equiangular
Illustration of a two polygons. Polygons may be mutually equiangular without being mutually equilateral....
Polygons, equilateral
Illustration of two polygons. Polygons may be mutually equilateral without being mutually equiangular (except for triangles)....
Quadrilateral
Illustration of a quadrilateral, a four-sided figure....
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