Transformation IGCSE
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Quiz 1: Fullscreen Mode Geometric Transformations Theory 1. Reflections Definition: Mirror image over a line Key Formulas: - Vertical line x=a: (x,y) → (2a-x,y) - Horizontal line y=b: (x,y) → (x,2b-y) - Line y=x: (x,y) → (y,x) - Line y=-x: (x,y) → (-y,-x) 2. Rotations Definition: Turning around a center point Rotation Matrices: 90° clockwise: \(\begin{pmatrix} 0 & 1 \\ -1 & 0 \end{pmatrix}\) 180° rotation: \(\begin{pmatrix} -1 & 0 \\ 0 & -1 \end{pmatrix}\) 3. Translations Definition: Sliding without rotation Vector Notation: Translation vector \( \binom{a}{b} \): (x,y) → (x+a, y+b) 4. Enlargements Scale Factor Formula: For center (h,k) and scale factor s: x' = h + s(x - h) y' = k + s(y - k) Combined...