The two corners of the triangle are 40 and 130. Find the outside angle at the third vertex.
July 27, 2021 | education|
To solve this problem, remember that the outer angle of the triangle at a given vertex is the angle adjacent to the inner corner of the triangle at this vertex. Remember the theorem: the outer angle of a triangle is equal to the sum of two inner angles that are not adjacent to it. In this case, the first and second corners are not adjacent to the outer corner, therefore the outer angle is equal to:
40 + 130 = 170 degrees.
Answer: 170 degrees.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.