Question

Need a little help with one please

Answer 1

That would be the side-side-side (SSS) postulate, which states that if all the sides of a triangle are in a fixed ratio to all the corresponding sides of another triangle, then the two triangles are said to be congruent.

Explanation:

Looking at triangles ABC and DEF, we notice that:

`(AB)/(DE) = (AC)/(DF)=(BC)/(EF)`

since

`(3)/(18) = (6)/(36)=(7)/(42)=(1)/(6)`

Let me know if you have further questions.