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10 cards from this deck
Portion of a line between two specific endpoints
Point exactly halfway between two endpoints
Add x-coordinates of endpoints, divide by 2
Add y-coordinates of endpoints, divide by 2
M=(x1+x22,y1+y22)M = \left(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\right)M=(2x1+x2,2y1+y2)
How far along the segment a point is positioned
4 parts
Calculate differences, apply ratio, add to starting coordinates
Ratio is 1:11:11:1
Proportional relationships
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