Question

NCERT Try these pg. 124

Answer 1

Question 3=

                       Given= AB=AC

                           To prove: BE=CF

                 Proof: In triangle ABE and ACF

                         AB=AC  (given)

                    Angle A= Angle A (common)

Angle AEB=Angle AEC   (each 90 degree)

          Triangle ABE is congruence Triangle ACF (AAS criteria)

                    BE=CF   (cpct)