One of the outer corners of the triangle is 136 degrees and one of the angles of the triangle is not adjacent to it 61 degrees.

One of the outer corners of the triangle is 136 degrees and one of the angles of the triangle is not adjacent to it 61 degrees. Find the second corner of the triangle not adjacent to the given outer corner.

It is known from the condition that one of the outer corners of the triangle is 136 °, and one of the angles of the triangle is not adjacent to it 61 °.
In order to find the second corner of a triangle not adjacent to the outer one, recall the following property of the outer corner.
So, the outer angle of a triangle is equal to the sum of two angles of the triangle that are not adjacent to it.
Let us denote by the variable x the unknown angle of the triangle not adjacent to the external angle.
x + 61 = 136;
x = 136 – 61;
x = 75 °.
Answer: 75 ° the second angle of the triangle is not adjacent to the outer one equal to 136 °.