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Shaun Kelly
5,648 PointsI don't understand how the blue point is (X3, Y3) !?
Shouldn't the blue point be (Y1.5, X1.5) because it's roughly in between 1 and 2 ?
2 Answers
Shaun Kelly
5,648 PointsVideo is to confusing but how do I calculate the yellow position based on the red and blue information ?
Stone Preston
42,016 PointsShouldn't the blue point be (Y0.5, X0.5)
the numbers after x and y dont get multiplied by the values x and y.
(X3, Y3) is just a label for the point. its not the actual formula for the point, just a way of labeling the point so that we can refer to it easily
there are 3 points and we need to be able to distinguish between the coordinates of each one. so we give the first point's coordinates labels of X1 and Y1, the second point's coordinates X2 and Y2, and the third point's coordinates X3 and Y3.
We could have labeled the points with anything, its just the methods described above are standard and easier to understand
Stone Preston
42,016 PointsStone Preston
42,016 Pointsyou use the pythagorean theorem which states that a^2 + b^2 = c^2 where a is the height, b is the base and c is the hypotenuse.
Amit covers all the calculations at 3:40 of this video. it explains it visually and using the formulas. I suggest watching it a few times to make sure you undestand