In a triangle, one of the angles is 64 degrees, the adjacent angle to the other angle

In a triangle, one of the angles is 64 degrees, the adjacent angle to the other angle of the triangle is 142 degrees. Find the third corner of the triangle.

The desired unidentified third corner of the triangle will be denoted by the conditional variable “Y”.

Based on the data of this example and taking into account the fact that the sum of the angles of the triangle is 180 ℃, we will compose the following expression: Y = 180 – 64 – (180 – 142).

The result of the calculation is Y = 116 – 38 = 78 ℃.

Answer: The third corner of the triangle is 78.