Quick Answer SSS
Proof
AC = DB
AB = DC
BC = BC This side is equal to itself and is common to both triangles.
Three sides of one triangle equal to 3 sides of the other means that the triangles are congruent. It is the Theorem you need.
THat would be option c Her cahnge in points would be 4 * -6 = -24.
(5*180)/7=900/7=128.5714285714286
The angle is approximately 129 degrees.
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A bit confusing for me to be able to answer this for you… any way you can simplify your question?
