In an isosceles triangle, angle A is 60g, find how much angle B will be equal to.

isosceles triangle ABC,
angle A = 60 degrees.
Find the degree measure of the angle B -?
1) Consider an isosceles triangle ABC. In an isosceles triangle, the angles at the base are equal. Then angle B = angle C;
2) We know that the sum of the degree measures of any triangle is 180 degrees. Consequently:
angle A + angle B + angle C = 180;
60 + angle B + angle B = 180;
angle B + angle B = 180 – 60;
angle B + angle B = 120;
2 * angle B = 120;
angle B = 120: 2;
angle B = 60 degrees.
Answer: 60 degrees.

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