CAIE IGCSE Mathematics C7.1.1 Reflection of a shape in a vertical or horizontal line.

Practise reflecting triangles, rectangles and other grid shapes in vertical or horizontal lines such as x=-1 or y=0.

Exam points

draw the reflected image by keeping each vertex the same distance from x=k or y=k
distinguish vertical and horizontal mirror lines when describing a transformation fully

[Maximum number: 2]

The diagram shows a point P and three triangles, A, B and C, on a $1 \mathrm{~cm}^{2}$ grid.

Draw the image of triangle A after a reflection in the line y=-1.

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