Question

in a triangle, AB=AC and D is the mid point of BC

a) state the 3 pairs of equal parts in ΔADB and ΔADC​

Answer 1

In triangles ADB and ADC:
AB = AC (Given)
BD = CD (D is the mid-point)
AD = AD (Common)

Answer 2

Step-by-step explanation:

Here in

ΔADB

and

ΔADC

Three pair of equal parts are:

AD = AD ( common side )

BD = CD ( as d is the mid point of BC)

AB = AC (given in the question)

ii) Now,

by SSS Congruency rule,

ΔADB≅ΔADC

iii) As both triangles are congruent to each other we can compare them and say

∠B=∠C.

I hope my answer is helpful for you ✌️☺️.