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12 cards from this deck
Distance from origin on Argand diagram
∣z∣=a2+b2|z| = \sqrt{a^2 + b^2}∣z∣=a2+b2
Absolute value bars: ∣z∣|z|∣z∣ or ∣a+bi∣|a + bi|∣a+bi∣
Non-negative real number
Pythagoras' theorem
Length of line segment from origin to point
∣z1∣+∣z2∣≥∣z1+z2∣|z_1| + |z_2| \geq |z_1 + z_2|∣z1∣+∣z2∣≥∣z1+z2∣
Sum of individual moduli always ≥\geq≥ modulus of sum
Identify real & imaginary parts, then square both
Add the squares, then take square root
Positive
Its absolute value
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