dot product invariant 1

Author:Esther Gruenhut

use the scroll bar to change the the lengths of u_1, v_1. how does this effect the dot product? check it out with different angles (no surprises here)

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Dividing a 2-digit number by a 1-digit number (1)
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Dividing a 2-digit number by a 1-digit number (2)
apec
အခြေခံ data အခေါ်အဝေါ်များ

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Parallelograms 1
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凸多邊形的外角和

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Algebra
Reflection
Parallelogram
Straight Lines
Circumcircle or Circumscribed Circle