TESSELLATIONS Created by 1 Sulasih 2 Minardji 3

TESSELLATIONS Created by : 1. Sulasih 2. Minardji 3. Indriana Y. 4. Darto 5. M. Lahuri 6. Gunari SMP SMP SMP N N N I Gresik I Bojonegoro 2 Semarang 4 Pakem I Ngoro I Karangmojo

What kind of a geometrical shape forms this design?

INDICATORS: n n n Creating tessellations using equilateral triangle, regular hexagon, rhombus, and trapezoid. Explaining whether tessellation can be created using a square and an equilateral triangle, and justifying the answer with a drawing. Determining the sum of measures of the angles where the vertices of the figures meet in the tessellations. Determining the name of two figures that cannot be used to create a tessellation and justifying the answer with a drawing. Creating tessellation using other pattern blocks.

Tessellations A pattern formmed by repeating figures that fit together without gaps or overlaps is a tessellation. Tessellations are formed using translation(slides), reflection(flips), or rotation(turns) of congruent figures

Three Common Transformations 1. Translation, which is a slide of one side of the polygon. 2. Reflection, which is a flip or mirror image of one side of the polygon. 3. Rotation, which is a turn of a side around one vertex of the polygon.

Reflections

Reflections

Tessellation from a rotation

Let’s try together a rotation