Question

In an Isosceles triangle base angles are equal if the vertex angle is 50º.what are the base angles?. *

b = 45º
b = 55º
b = 75º
b = 65º​

Answer 1

Answer:

65°

Step-by-step explanation:

180-50/2=x

65=x

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Answer 2

Answer:

b=65° is correct

Step-by-step explanation:

Let base angle = b

given = vertex angle = 50°

Now by angle sum property of triangle

b+b+50 = 180

2b +50 =180

2b = 180 - 50

2b = 130

b = 130 ÷ 2

b = 65