Question

Instructions: State what additional information is required in order

to know that the triangles in the image below are congruent for the
reason given
Reasory. SAS Postulate

Answer 1

HJ = FG

Explanation:

SAS means side - (included) angle - side.

we have one angle confirmed (at H and at G).

we have actually one side confirmed (HG), because the graphic shows that this side is shared between the triangles. so, implicitly it is not only congruent but really identical.

so, we need the confirmation of the second side enclosing the confirmed angle.