Mathematics: Which pairs of polygons are similar but could be mistaken for not being similar?

Which pairs of polygons are similar but could be

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sjharrison04

04.12.2020

Mathematics

Do you pusillanimous possibly have a image of the polygons

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wendy1538

06.08.2022

Mathematics

$\mathbf r(t)=\langle t^2,1-t,4t\rangle$
$\implies\mathbf r'(t)=\langle 2t,-1,4\rangle$

$\dfrac{\mathrm d(\mathbf r(t)\cdot\mathbf a(t))}{\mathrm dt}\bigg|_{t=5}=\mathbf r'(5)\cdot\mathbf a(5)+\mathbf r(5)\cdot\mathbf a'(5)$
$=\langle10,-1,4\rangle\cdot\langle-4,4,-5\rangle+\langle25,-4,20\rangle\cdot\langle-5,9,3\rangle$
=(-40-4-20)+(-125-36+60)

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Which pairs of polygons are similar but could be mistaken for not being similar?

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