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12 cards from this deck
Same shape, different sizes
Always equal
In the same ratio (proportional)
All three angles equal
Only 2 (3rd auto equal, angles sum 180°)
All three sides in same ratio
Two sides proportional + equal included angle
Angle between the two sides being compared
Ratio between corresponding sides
Set up proportional ratios and solve
Still maintain angle and ratio relationships
Cross multiply: a=c×bda = \frac{c \times b}{d}a=dc×b
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