Given: AB=BC, AM=MC BM IAC , EF I BC
EC
FC
Prove:
AB
MA
B
F
с
A
EM

Identify reflection rule on a coordinate plane that verifies that triangle a(-1,7), b(6,5), c(-2,2) and a’(-1,-7), b(6,-5), c’(-2,2) triangle are congruent when reflected over the x-axis