In triangle ABC, BD is the bisector, angle A is 70 degrees, angle CBD is 20 degrees. Find corner C.
| February 19, 2021 | education
Since the ВD is the bisector of the ABC angle, then the AВD angle = СВD = 20, then the ABC angle = 2 * AВD = 2 * 20 = 40.
The sum of the inner angles of the triangle ABC is 180, then the angle ACB = 180 – BAC – ABC = 180 – 70 – 40 = 70.
Answer: The angle ABC is 70.
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