p1
Only translation symmetry
From Simon Gregg:
pm
Parallel mirrors
pg
Glide reflections
From Simon Gregg:
cm
Alternating mirrors and glide reflections
From Kathy Paur:
From Hana Murray:
From Simon Gregg:
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Henri Picciotto's Math Education Page
Henri Picciotto
p1
Only translation symmetry
From Simon Gregg:
pm
Parallel mirrors
pg
Glide reflections
From Simon Gregg:
cm
Alternating mirrors and glide reflections
From Kathy Paur:
From Hana Murray:
From Simon Gregg: