Question

in the given figure AB=AC and angle ACD=125 . find angle A

Answer 1

Heyy Buddy ❤

Here's your Answer..

Since, AB = AC

THEREFORE, IT IS A ISOSCELES TRIANGLE.

So,

x° + x° + 125 = 180

=> 2x = 180 - 125

=> 2x = 55

=> x = 55/2

=> x = 27.5
,✔✔✔

Answer 2

Answer:

Given

angle ACD = 125°

AB= AC

To find

angle A

Solution

AB= AC

According to theorm 7.2, angles opp.to equal sides of an isosceles triangle are equal

angle B = angle C

angle C= 180°-125°

= 55°

angle B = 55°

55°+55°+angle A= 180°. ( angle sum property of triangle)

110°+ angle A = 180°

angle A= 180°-110°

= 70°

Therefore, angle A= 70°

Hope this helps you