I need help with profs
Mathematics
lulitacarx3
Question
I need help with profs
2 Answer

1. User Answers duckie461
every one needs help with them, because they are hard. 
2. User Answers mrinconj
The XC segment is a common side for triangle ABC and triangle XYZ because they are overlaping and the segments AX≡XZ then AC≡XZ
According to the SAS criteria (sideangleside), two sides (AB≡YZ and AC≡XZ) and the included angle (∠A≡∠Z) are respectively equal, then the triangles ABC and XYZ are congruents, so their angles are equal, for those reasons ∠B≡∠Y