Question

D
A
110°
4. In the given triangle ABC, AB = AC.
Find all the three angles of the triangle.
B
13
'AC​

Answer 1

Answer:

1.=55⁰

2.=70⁰

3.=55⁰

Step-by-step explanation:

Since, AB=AC

angle 3 = angle 1

let angle 1 be x ,then

angle 1+angle 3 = 110. (sum of two interior angle of a triangle= exterior angle)

X+X=110

2x=110 , X= 110/2 =55

therefore , angle 1 and angle 3 is 55⁰.

angle 1+angle 3+angle 2=180⁰ (angle sum property)

55+55+angle 2=180

angle 2=180-110 =70

therefore angle 2 is 70⁰.