by Jongsuk Keum

Students explore 7 types of strip pattern, make the multiplication table, and make figures for the strip pattern using GSP.

Multiplication table for Strip Pattern

A

- I = identity
- T = translation with vector parallel to L, T not the identity
- R = rotation with center on L and angle 180 degrees
- V = reflection with "vertical" mirror, i.e. mirror perpendicular to L
- H = reflection with "horizontal" mirror, i.e. mirror L
- G = glide reflection with mirror L, G not equal to H

I | T | R | V | H | G | |

I | I | T | R | V | H | G |

T | T | T,I | R | V | G | H,G |

R | R | R | T,I | H,G | V | V |

V | V | V | H,G | T,I | R | R |

H | H | G | V | R | I | T |

G | G | G,H | V | R | T | T,I |

Seven types of strip pattern

T, TR, TV, TG, THG, TRVG, TRVHG

**Conway'**s names for strip pattern

1. Hop ( T )

Make figures of 7 types of Strip Pattern symmetry using GSP

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