Geometry

Tetrahedron (triangular pyramid) side 1
Square pyramid side 1

Triangular Pyramid side 1 (with isosceles triangles)

Octahedron side 1 and Dodecahedron built from
12 pure pentagons (Platonic Solids)

Cube (Platonic Solid) built from
12 right-angled triangles

Pentagonal Dipyramid built from
10 Isosceles Triangles

Flat 5-pointed star made from
2 pentagons with triangle,
10 isosceles triangles & 10 rectangles

Great Rhombicuboctahedron (Archimedean Solid)

Truncated Dodecahedron (Archimedean Solid)

Rhombicosidodecahedron (Archimedean Solid)
Stellated Icosahedron
Sierpinski Pyramid - Built using 2304
small equilateral triangles
+ 600 clear triangles and squares to link
the 64 pyramids

Huge Octahedreon.
Built using 336 small equilateral triangles, 36 squares and 24 hexagons without squares

Helix
Built using 48 small eq. triangles & 1 square

Rainbow Pyramid
Built using 196 small equilateral triangles

Tetrahedron (triangular pyramid) side 1 Square pyramid side 1	Triangular Pyramid side 1 (with isosceles triangles)
Octahedron side 1 and Dodecahedron built from 12 pure pentagons (Platonic Solids)	Cube (Platonic Solid) built from 12 right-angled triangles
Pentagonal Dipyramid built from 10 Isosceles Triangles	Flat 5-pointed star made from 2 pentagons with triangle, 10 isosceles triangles & 10 rectangles
Great Rhombicuboctahedron (Archimedean Solid)	Truncated Dodecahedron (Archimedean Solid)
Rhombicosidodecahedron (Archimedean Solid) Stellated Icosahedron	Sierpinski Pyramid - Built using 2304 small equilateral triangles + 600 clear triangles and squares to link the 64 pyramids

Huge Octahedreon. Built using 336 small equilateral triangles, 36 squares and 24 hexagons without squares
Helix Built using 48 small eq. triangles & 1 square	Rainbow Pyramid Built using 196 small equilateral triangles