1) Triangles are not similar, for triangles to be similar their sides have to be proportional which doesn't happen in this case
2)Triangles are Similar(ΔCBA ~ ΔFGH) all their sides are proportional meeting the SSS theorem that all sides have to be proportional making the two triangles similar
3)Triangles are Similar(ΔVUT ~ ΔVLM), two sides of each given triangle are proportional to each other and by the vertical angle theorem, ∠MVL is equal to ∠TVU. Thus it meets the SSA theorem which states the two sides of each given triangle must proportional and one angle of each triangle are equal.
4)Triangles are Similar(ΔJKL ~ΔTUV), because two angles of each triangle are equal, it meets that AA theorem that if two given angles of each triangle are equal, then the triangles are similar.
5) Triangles are not similar, only one angle of each triangle is equal and thus the two triangles are not similar
6) Triangles are not similar, the sides are not proportional to each other with the same ratio, so the triangles are not similar
Hope that helps!