Porisma
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Vectors: magnitude, direction and products

Read the scalar product and its laws · Diagrams

Translate vectors to read their included angle

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Source page 18 roles: an up-right a paired with rightward b gives an acute angle; reversing b gives an obtuse angle. Each row shows detached free vectors, a common-tail view and a common-head view. Translation preserves vector directions. Both-outgoing and both-incoming configurations give the same included angle.
Source page 18 roles: an up-right a paired with rightward b gives an acute angle; reversing b gives an obtuse angle. Each row shows detached free vectors, a common-tail view and a common-head view. Translation preserves vector directions. Both-outgoing and both-incoming configurations give the same included angle.
Source page 18 roles: an up-right a paired with rightward b gives an acute angle; reversing b gives an obtuse angle. Each row shows detached free vectors, a common-tail view and a common-head view. Translation preserves vector directions. Both-outgoing and both-incoming configurations give the same included angle.
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