#polydron — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #polydron, aggregated by home.social.
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Polydron special offer: Use code ATM10 for 10% off your Polydron order (offer ends 30 September 2025)
https://www.polydron.co.uk/shop.html#coupons #coupon #discounts #polydron #offer #geometry #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education
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‘Exploring triangles at the Institute of Mathematics Pedagogy (IMP)’
Tandi Clausen-May reflects on an exploration of 3D shapes made from triangles.https://atm.org.uk/write/MediaUploads/Journals/MT295/03.pdf
One of the two free articles from Mathematics Teaching 295 for non-members.
#geometry #triangle #helix #polydron #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education #mathematics -
A triangular cupola and a gyroelongated square bipyramid. Both are Johnson solids. (https://mathworld.wolfram.com/JohnsonSolid.html) #polydron Named after Norman Johnson (1930-2007), an American mathematician.
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This is a truncated icosahedron. (next to it the rhombicosidodecahedron I posted earlier) Truncated, because you truncate the vertices from a regular icosahedron. You can also call it a ‘football’ or ‘soccer ball’ if you live across the pond.
It has 32 surfaces and is an Archimedean solid. #Polydron -
Do you know a pleasing way to colour the 20 faces of a regular icosahedron with 4 colours (so that faces meeting at an edge are different colours)? Or equivalently, can you colour the 20 vertices of a regular dodecahedron with four colours (so that vertices at each end of of an edge are different colours)?
You might wonder why use only 4 colours? The reason is that a sample #polydron pack has 20 equilateral triangles in only 4 colours.
#geometry #mathart -
A triangular cupola and a gyroelongated square bipyramid. Both are Johnson solids. (https://mathworld.wolfram.com/JohnsonSolid.html) #polydron Named after Norman Johnson (1930-2007), an American mathematician.
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This is a truncated icosahedron. (next to it the rhombicosidodecahedron I posted earlier) Truncated, because you truncate the vertices from a regular icosahedron. You can also call it a ‘football’ or ‘soccer ball’ if you live across the pond.
It has 32 surfaces and is an Archimedean solid. #Polydron -
Polydron special offer: Use code ATM10 for 10% off your Polydron order (offer ends 30 September 2025)
https://www.polydron.co.uk/shop.html#coupons #coupon #discounts #polydron #offer #geometry #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education
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Polydron special offer: Use code ATM10 for 10% off your Polydron order (offer ends 30 September 2025)
https://www.polydron.co.uk/shop.html#coupons #coupon #discounts #polydron #offer #geometry #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education
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Polydron special offer: Use code ATM10 for 10% off your Polydron order (offer ends 30 September 2025)
https://www.polydron.co.uk/shop.html#coupons #coupon #discounts #polydron #offer #geometry #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education
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Polydron special offer: Use code ATM10 for 10% off your Polydron order (offer ends 30 September 2025)
https://www.polydron.co.uk/shop.html#coupons #coupon #discounts #polydron #offer #geometry #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education
-
‘Exploring triangles at the Institute of Mathematics Pedagogy (IMP)’
Tandi Clausen-May reflects on an exploration of 3D shapes made from triangles.https://atm.org.uk/write/MediaUploads/Journals/MT295/03.pdf
One of the two free articles from Mathematics Teaching 295 for non-members.
#geometry #triangle #helix #polydron #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education #mathematics -
‘Exploring triangles at the Institute of Mathematics Pedagogy (IMP)’
Tandi Clausen-May reflects on an exploration of 3D shapes made from triangles.https://atm.org.uk/write/MediaUploads/Journals/MT295/03.pdf
One of the two free articles from Mathematics Teaching 295 for non-members.
#geometry #triangle #helix #polydron #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education #mathematics -
‘Exploring triangles at the Institute of Mathematics Pedagogy (IMP)’
Tandi Clausen-May reflects on an exploration of 3D shapes made from triangles.https://atm.org.uk/write/MediaUploads/Journals/MT295/03.pdf
One of the two free articles from Mathematics Teaching 295 for non-members.
#geometry #triangle #helix #polydron #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education #mathematics -
‘Exploring triangles at the Institute of Mathematics Pedagogy (IMP)’
Tandi Clausen-May reflects on an exploration of 3D shapes made from triangles.https://atm.org.uk/write/MediaUploads/Journals/MT295/03.pdf
One of the two free articles from Mathematics Teaching 295 for non-members.
#geometry #triangle #helix #polydron #MathematicsTeaching #atm #MT #MT295 #iTeachMath #MathEd #Math #Education #mathematics -
Do you know a pleasing way to colour the 20 faces of a regular icosahedron with 4 colours (so that faces meeting at an edge are different colours)? Or equivalently, can you colour the 20 vertices of a regular dodecahedron with four colours (so that vertices at each end of of an edge are different colours)?
You might wonder why use only 4 colours? The reason is that a sample #polydron pack has 20 equilateral triangles in only 4 colours.
#geometry #mathart -
Do you know a pleasing way to colour the 20 faces of a regular icosahedron with 4 colours (so that faces meeting at an edge are different colours)? Or equivalently, can you colour the 20 vertices of a regular dodecahedron with four colours (so that vertices at each end of of an edge are different colours)?
You might wonder why use only 4 colours? The reason is that a sample #polydron pack has 20 equilateral triangles in only 4 colours.
#geometry #mathart -
Do you know a pleasing way to colour the 20 faces of a regular icosahedron with 4 colours (so that faces meeting at an edge are different colours)? Or equivalently, can you colour the 20 vertices of a regular dodecahedron with four colours (so that vertices at each end of of an edge are different colours)?
You might wonder why use only 4 colours? The reason is that a sample #polydron pack has 20 equilateral triangles in only 4 colours.
#geometry #mathart -
Do you know a pleasing way to colour the 20 faces of a regular icosahedron with 4 colours (so that faces meeting at an edge are different colours)? Or equivalently, can you colour the 20 vertices of a regular dodecahedron with four colours (so that vertices at each end of of an edge are different colours)?
You might wonder why use only 4 colours? The reason is that a sample #polydron pack has 20 equilateral triangles in only 4 colours.
#geometry #mathart