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12 cards from this deck
12∣x1y2−x2y1∣\frac{1}{2}|x_1y_2 - x_2y_1|21∣x1y2−x2y1∣
x12+y12\sqrt{x_1^2 + y_1^2}x12+y12
x22+y22\sqrt{x_2^2 + y_2^2}x22+y22
(x2−x1)2+(y2−y1)2\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}(x2−x1)2+(y2−y1)2
m=y1x1m = \frac{y_1}{x_1}m=x1y1
y=mxy = mxy=mx where m=y1x1m = \frac{y_1}{x_1}m=x1y1
m=y2−y1x2−x1m = \frac{y_2-y_1}{x_2-x_1}m=x2−x1y2−y1
y−y1=m(x−x1)y - y_1 = m(x - x_1)y−y1=m(x−x1)
Area, side lengths, slopes & equations of sides
999 square units
555 units
Simplifies coordinate geometry calculations
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