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140 degrees, the answer is 140 degrees
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1) consider the above figure
In triangle ABC,
angle A = 90 degree
and angle B = angle C ( isosceles triangle)
sum of all the angles in the triangle = 180 degree
so,
angle A + angle B + angle C = 180
90 + angle B + angle C = 180
2angle B = 180-90
angle B = angle C = 45 degree
so each of the base angles is 45 degree
please mark it as brainliest
In triangle ABC,
angle A = 90 degree
and angle B = angle C ( isosceles triangle)
sum of all the angles in the triangle = 180 degree
so,
angle A + angle B + angle C = 180
90 + angle B + angle C = 180
2angle B = 180-90
angle B = angle C = 45 degree
so each of the base angles is 45 degree
please mark it as brainliest
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