Question

One of the angles of an isosceles triangle is 100°. Is this a base angle or a vertical angle. Give reasons. Calculate the other two angles also.

Answer 1

HELLO......

We know that an isosceles triangle has two sides of the same length and one side of different length.

The sum of the measures of the angles of the triangle is 180°.

We know the vertical angle of the triangle i.e., 100°.

Let the base angles be x and x since they have the same value.

So we get,

x+x+100=180° (by condition)

2x+100=180°

2x= 180-100

2x=80

x=80/2

x=40°

So the measure of both the base angles are x i.e.,

Answer 2

⭕ Here is your answer ⭕

sum of angle in isosceles triangle

x+x+y=180°

2x+100=180

2x=80

x=40°

Another two angles are 40°

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