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13 cards from this deck
Straight line section connecting two specific points
Line segment has definite start and end points
Pythagoras' theorem
d=(x2−x1)2+(y2−y1)2d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}d=(x2−x1)2+(y2−y1)2
The hypotenuse
Subtract x-coordinates
Subtract y-coordinates
Only positive values
Same as adding a positive number
Cannot be negative
Helps visualise problem and prevent errors
Gain method marks even if answer is wrong
2 decimal places
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