The angle A of triangle ABC is 40 degrees, and the outside angle with vertex B is 105 degrees. Find corner C.
| August 8, 2021 | education
The external angle ABC and the internal angle ABC of the triangle ABC are adjacent angles, the sum of which is 180, then the angle ABC = 180 – AED = 180 – 105 = 75.
The sum of the inner angles of the triangle is 180, then the angle ACB – 180 – CAB – ABC = 180 – 40 – 75 = 65.
Answer: The ACB angle is 65.
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