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2 A polyamond is a polyform based on equilateral triangles.

⑴ Join three equilateral triangles and make different figures. Draw them.

Triamond

⑵ Join four equilateral triangles and make different figures. Draw them.

Tetriamond

⑶ Join five equilateral triangles and make different figures. Draw them.

Pentiamond

3. Tetrabolo 35
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