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Reflective Symmetry (a)
THINGS TO DO
You should have one acute and two obtuse Isotiles.
Every isosceles triangle has a line of reflective symmetry. Where is it?
Consider the rhombus, and make one yourself. If you lift the two obtuse Isotiles towards each other, keeping the long side flat on the surface, you will see they meet perfectly. This is an obvious axis (line) of symmetry.
But there is another line of symmetry for any rhombus. Where is it?
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