Question

the vertical angle of an issoceles triangle is 100degree find its base angles​

Answer 1

Answer:

40 degree angle

Step-by-step explanation:

every triangle has 180 degree.

So, (180-100)=80degree

                    There are two angles so 80/2=40degree

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Answer 2

Answer:

In an isosceles triangle, the two sides are equal so the angle opposite to equal sides are equal.

Step-by-step explanation:

In triangle ABC, AB=AC

So. angle A=angle B= x

x+x+100°=180°

2x=180°-100°

x=80/2

x=40°