[محمد كركر]

by drawing MA THEREFORE WE HAD TWO ISOSCELE TRIANGLE AMB AND AMC
THEN MEASURE OF ANGLE AMB =130 AND MEASURE OF AMC = 116 THEN MEASURE OF ANGLE (REF.BMC) =246
THEN THE MEASURE OF THE ANGLE BMC =114
THEN M(BAC = 57
SORRY I USED ENGLISH LETTERS INSTEAD OF ARABIC LETTERS
ا = A , ب = B , ج = C , م = M