In the ABC triangle, the angle is C = 40 degrees, the outer angle at the vertex
| September 4, 2021 | education
In the ABC triangle, the angle is C = 40 degrees, the outer angle at the vertex is B = 70 degrees. Find the rest of the interior corners of the triangle.
The outer corner of a triangle is equal to the sum of its two inner angles that are not adjacent to it.
Angle ABM = (ACB + BAC).
70 = (40 + BAC).
Angle BAC = (70 – 40) = 300
Then the angle ABC = (180 – 30 – 40) = 110.
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