Reflection
A triangle ABC is reflected in the brown mirror line to give the triangle A'B'C'. Lines connecting A to A', B to B' and C to C' are also shown.
Move some points about.
What TWO things are always true about the points M, N and P?
Choose...
Nothing much
They are on the mirror line
They are in the order M N P
They are midpoints of the blue lines
Result:
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MathsNet
2001
