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L6 Regular Tessellations Grade D Progression: Medium Section A: Use the illustrations of regular polygons to complete the table. Size of each interior angle? Regular Polygon Does this polygon tessellate? Equilateral triangle Square Regular Pentagon Regular Hexagon Regular Heptagon Regular Octagon Use the table to explain why only some regular polygons tessellate. Section B: The following questions contain regular polygons. Work out the missing angles. 1) b 2) 3) 4) d c a a= c= b= 5) 6) 7) h e d= 8) k g j i f e= f = g= h= i= j= k= Extension Which questions above contain shapes that semi-tessellate? ©cazoom! educational resources www.cazoommathsworksheets.com Geometry . Level 6 . Polygons . Regular Tessellations