Reflections (Leaving Cert Mathematics): Flashcards

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Reflections
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Reflection definition

Flipping object across line to make mirror image

Line of reflection

Line across which object is reflected (mirror line)

Image (reflection)

New shape produced by reflection

Reflection: image vs original

Same shape and size, reversed orientation

Image point distance from line

Same as original point distance

How to describe reflection

Give line equation or draw line on grid

Line x=2x=2

Vertical line through x=2x=2

Line y=xy=x

Diagonal where xx equals yy

Key principle of reflection

Every point equidistant from mirror line

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