1.

DA110°4. In the given triangle ABC, AB = AC.Find all the three angles of the triangle.B13'AC​

Answer»

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.



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