Question

if angle A+ angle B =75, angle B+ angle C= 140, find angle B

Answer 1

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Answer 2

Answer:

Angle B = 35°

Step-by-step explanation:

A +B = 75°. ---(1

B +C = 140° -----(2

ON ADDING BOTH,

A + 2B +C= 215. ---(3

AS WE KNOW,

A + B +C= 180. ------(4

SO, on substracting eq.4 from eq.3 we get ,,

angle B = 35°

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