I need help!!!!!!! Please, please help me!!!!!

Question

anonymous · Answer

attachment

anonymous · Answer

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directrix · Answer

@hedyeh99 

Recall this theorem: All points on the perpendcular-bisector of a segment are equidistant from the endpoints of the segment.

If M lies on the perpendicular-bisector of segment SI, the SM = IM. 

There may be other factors to consider before selecting an option.

anonymous · Answer

I don't know that theorem :( @Directrix

anonymous · Answer

Wait, would it be an isosceles triangle?

directrix · Answer

@hedyeh99

That theorem is a spin-off of the two triangles being congruent by SAS.
Segments MI and MS are corresponding parts of congruent triangles and are, therefore, congruent by definition of congruent triangles.

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