Perimeter of a triangle given coordinates of vertices

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Hi thanks for the video it helps a lot. But how about when it is in a 3 dimensional space? Adding the Z axis coordinates?

markkjim
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Thank you, this video was extremely helpful 😁

vladproductions
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THANK YOU GEOMETRY FINALS ARE KILLING ME

Vivi-cqkx
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OMG.Thank you much. Much less confusing than EVERTHING I've tried to look up so friggin far.

Cybil
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Don't you divide by 2 because it's a triangle?

EmilyJinxster