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Dodecahedron: Regular Dimensions

March 26, 2021 By Lisa

How many pentagons in a dodecahedron?

hfcm id=”7″ hfcm id=”8″ How many pentagons are in a Dodecahedron? The Dodecahedron is formed of 12 faces of regular pentagons. It is made up from 20 vertices, 30 edges and the 12 faces. It is termed regular because each face is a regular polygon, in this instance that polygon being the pentagon. In 3 […]

Filed Under: crafts, for teachers, geometry, Shape Hunting, symmetry Tagged With: Dodecahedra, dodecahedron, how many, Many, much, pentagon, Pentagonal, pentagons

Rotational Symmetry of a Pentagon: Rotational Symmetry in Nature

March 9, 2021 By Lisa

rotational symmetry in nature

hfcm id=”5″ hfcm id=”6″ What is Rotational Symmetry? A Rotation is a transformation of a shape around a central point. Rotational Symmetry is when the rotated shape looks the same as in the original position. In the diagram here, the point of rotation is where the lines meet at the centre. The shape that’s rotated […]

Filed Under: for teachers, geometry, nature study, Shape Hunting, symmetry, teaching Tagged With: has rotational symmetry, have rotation symmetry, have rotational symmetry, how many lines, Lines, Order, order of rotation, order of rotational symmetry, pentagon, rotation symmetry, rotational symmetry, Symmetric, symmetry

Which 5 pointed star has magical associations? Plus other five point star info

February 11, 2021 By Lisa

which 5 point star has magical associations?

Meanings of 5 pointed stars vary throughout history and cultures. The 5 pointed star is the most well recognised symbol of the Pentad

Filed Under: collections, for teachers, geometry, Uncategorized Tagged With: 5 pointed star, Association, Correspondences, Five pointed star, Five pointed star has associations, hexagram, Magic, Magical, pentacle, pentagram, Pentagram has magical associations

Beechnut and Geometry

September 29, 2018 By Lisa

Beechnut and geometry - sacred

Many people love beechnuts and many people love geometry. But did you know you can experience them together? The beechnut and geometry. I have noticed that the shapes inside the beechnut resemble very closely the beginning constructions of geometry patterns. The geometry of seeds I love collecting seeds from trees. They always display such great […]

Filed Under: collections, geometry, identification, nature study, seasons, Shape Hunting, symmetry, trees Tagged With: 9+ years, collecting, finding shapes, geometry, nature, observation, symmetry, triangle

String, Straight-edge and Shadow

June 14, 2018 By Lisa

string,straight-edge and shadow

String, Straight-edge and Shadow The Story of Geometry by Julia E Diggins, Floris Books Mixing history and legend this intriguing book explores geometry’s greatest discoveries and through stories and illustrations explains the geometric principles which underpin mathematics in our world   FLORIS BOOKS The tradition that we call GEOMETRY is so very much part of life […]

Filed Under: for teachers, geometry, parent interest, reading, Steiner Waldorf, teaching, World geometry Tagged With: 9+ years, book review, earth and the solar system, geometry

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