Answer:
25) 
26) 
27) Yes, Two triangles are congruent, because of SSS (Side-Side-Side).
28) No, Both two triangles are not congruent. (There is only two sides and not a third one as a side or angle on a triangle).
29) Yes, Because those three numbers 9, 15, 10 can form a triangle.
True
True
True
30) No, Because those three numbers 18, 10, 6 can't form a triangle.
True
True
False