Question

A
5. ABC and DBC are two isosceles triangles on the
same base BC (see Fig. 7.33). Show that
Z ABD= 2 ACD.
B​

Answer 1

Answer:

In △DAB and △DAC,

AB = AC (Given)

BD = CD (Given)

AD = AD (Common side)

∴ △ ABD ≅ △ ACD (By SSS congruence rule)

∴ ∠ABD = ∠ACD (By CPCT)