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10 cards from this deck
A vector has size and direction, shown as v = (x, y, z).
It's the smallest turn needed from one vector to another.
a · b = ax · bx + ay · by + az · bz.
|v| = √(x² + y² + z²).
cos(θ) = (u · v) / (|u||v|).
u · v = 0, θ = 90°.
u · v = |u||v|, θ = 0°.
Calculate the dot product u · v.
θ = 90° + k*180°, where k is any integer
They help in understanding spatial relationships.
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