SOLUTION: n the figure triangle abc is congruent to triangle bch which is congruent to triangle hgb is it possible to determine angle gbh why?

Question 1102508: n the figure triangle abc is congruent to triangle bch which is congruent to triangle hgb is it possible to determine angle gbh why?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
When we say that triangle is congruent to triangle ,
we are saying about the relations of side length that.
, , and .
In this case, because side BC is shared between two triangles,
.
So, and
That tells us that both triangles are at least isosceles,
and may even be a peculiar type of isosceles triangle
that we call an equilateral triangle.
I can also picture those two triangles looking like this
, or like this .

Without comparing sides of and ,
we already know that they are both isosceles triangles,
with vertex marked by the middle letter and flanked by congruent sides:
.
Angle HGB is the vertex angle of the isosceles triangle,
and angle GBH is one of the two congruent base angles.

We have three congruent isosceles triangles, looking like this
,
or like this ,
or like this
,
or like this
,
but we do not know the measure of their angles.

It could be that they are equilateral,
with

,
and all the angles measuring .
However, without any more information
(which could be implied by the figure I do not see),
I do not know if they are equilateral triangles,
and I do not know the angles' measures.
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