Question

in a triangle ABC, angle B =angle C and angle A = 100 °. Find angle B​

Answer 1

Answer:

angle B=40°

Step-by-step explanation:

measure of all angles of triangle =180°

angle a +angle b + angle c =180

100+angle b +angle c = 180

angle b +angle c = 180 -100

angle b + angle c = 80

as angle b & angle c are equal angles

therefore, angle b = 80/2

therefore, angle B= 40°

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