Please help I don't understand!

[tex]\large{\underline{\underline{\pmb{\frak {\color {red}{Question:}}}}}}[/tex]
[tex] \sf \red{all \: triangles \: are \: similar}[/tex]
[tex]\large{\underline{\underline{\pmb{\frak {\color {blue}{Answer:}}}}}}[/tex]
[tex]\green\star[/tex]False
[tex] \sf \green{Explanation:}[/tex]
Expect Equilateral triangle, all triangles are not similar.
[tex] \boxed{ \frak \red{brainlysamurai}}[/tex]