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Diagram used to prove the theorem: "Two trihedral angles, which have three face angles of the one equal respectively to three face angles of the other , are either equal or symmetrical."

Symmetrical or Equal Trihedral Angles

Diagram used to prove the theorem: "Two trihedral angles, which have three face angles of the one equal…

The Coffer Architectural frame of the German Renaissance, was a round shape that is surrounded by an ornate frame that is symmetrical on all sides, without regard to the top and bottom.

Coffer Frame

The Coffer Architectural frame of the German Renaissance, was a round shape that is surrounded by an…

The Desk in San Giorgio Maggiore Architectural frame is an Italian Renaissance style. It was a oblong shape surrounded by an ornate frame that is symmetrical on all sides, without regard to the top and bottom.

Desk in San. Giorgio Maggiore Frame

The Desk in San Giorgio Maggiore Architectural frame is an Italian Renaissance style. It was a oblong…

The door-panel architectural frame was a square that is surrounded by an ornament that is symmetrical on all sides without regard to the top and bottom.

Door-Panel Frame

The door-panel architectural frame was a square that is surrounded by an ornament that is symmetrical…

This modern frame was made in the style of the German Renaissance. It has an oblong shape in the center that is surrounded by an ornate design which is symmetrical on all sides, without regard to the bottom or top of the frame.

Modern Architectural Frame

This modern frame was made in the style of the German Renaissance. It has an oblong shape in the center…

The Modern French Architectural Frame has an oblong shape in the middle that is surrounded by an ornate design which is symmetrical on all sides, without regard to top and bottom.

Modern French Architectural Frame

The Modern French Architectural Frame has an oblong shape in the middle that is surrounded by an ornate…

The Modern French Architectural Frame has an oblong shape in the middle that is surrounded by an ornate design which is symmetrical on all sides, without regard to top and bottom.

Modern French Architectural Frame

The Modern French Architectural Frame has an oblong shape in the middle that is surrounded by an ornate…

The stove-tile architectural frame of the 17th century, was a square surrounded by an ornate frame that is symmetrical on all sides, without regard to the top and bottom.

Stove-Tile Frame

The stove-tile architectural frame of the 17th century, was a square surrounded by an ornate frame that…

"A modification of the simple kaleidoscope was introduced by Sir David Brewster, whereby the images of large and distant objects can be introduced into the picture. This is effected by removing the object box and replacing it by a tube carrying at its outer end a double convex lens, represented by LL. By a screw adjustment the lens can be so placed as to focus the distant object exactly in the plane of the sector AOB, and so bring its image into the very best position for producing symmetrical patterns. When this instrument is directed towards a tree in full bloom, a very beautiful effect is produced, which can be varied by gradually moving the instrument. This form was called by Brewster the telescopic kaleidoscope." —The Encyclopedia Britannica, 1910

Convex Lens

"A modification of the simple kaleidoscope was introduced by Sir David Brewster, whereby the images…

"Diagram of the symmetrical trimerous flower of Fritillary, having three divisions of the two outer whorls, and of the pistil in the center, and six stamens in two rows." — Encyclopedia Britanica, 1893

Fritillary

"Diagram of the symmetrical trimerous flower of Fritillary, having three divisions of the two outer…

"Diagram of the trimerous symmetrical flower of Iris. There are three alternating divisions of each whorl. Below is a single bracket." — Encyclopedia Britanica, 1893

Iris

"Diagram of the trimerous symmetrical flower of Iris. There are three alternating divisions of each…

Illustration of an octagon with symmetry with respect to two axes perpendicular to each other. It is symmetrical with respect to their intersection as a center.

Octagon with Symmetry

Illustration of an octagon with symmetry with respect to two axes perpendicular to each other. It is…

"Another form is called the polyangular kaleidoscope. The only essential difference in it is that the mirrors are so arranged that the angle between them can be varied at pleasure. This, being very useful for illustrating the theory of the instrument, is the form usually found in collections of philosophical apparatus." —The Encyclopedia Britannica, 1910

Polyangular Kaleidoscope

"Another form is called the polyangular kaleidoscope. The only essential difference in it is that the…

Illustration of a quadrilateral which has two adjacent sides equal and the other two sides equal. It is symmetrical with respect to the diagonal joining the vertices of the angles formed by the equal sides, and the diagonals are perpendicular to each other.

Quadrilateral with Symmetry

Illustration of a quadrilateral which has two adjacent sides equal and the other two sides equal. It…

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used only in the last three centuries.

Modern Sofa

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used…

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used only in the last three centuries.

Modern Sofa

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used…

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used only in the last three centuries.

Modern Sofa

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used…

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used only in the last three centuries.

Modern Sofa

The Modern Sofa is symmetrical and the arms are upholstered with cushions. It has been commonly used…

Diagram showing 2 superimposed symmetrical spherical triangles.

Superimposed Symmetrical Spherical Triangles

Diagram showing 2 superimposed symmetrical spherical triangles.

Diagram showing 2 symmetrical spherical triangles.

Symmetrical Spherical Triangles

Diagram showing 2 symmetrical spherical triangles.

The Arabian star-shape panel is a symmetrical design. Edited by FCIT to present complete image.

Arabian Star-Shape Panel

The Arabian star-shape panel is a symmetrical design. Edited by FCIT to present complete image.

Diagram showing a 2 symmetrical spherical triangles.

Two Symmetrical Spherical Triangles

Diagram showing a 2 symmetrical spherical triangles.