The two corners of the triangle are 25 degrees each, so determine the value of the third angle.

Let’s solve this task by actions with explanations. 1) 25 * 2 = 50 degrees – the degree measure of two angles in a triangle, as, according to the condition of the problem, these two angles are 25 degrees each. Knowing that the sum of the degree measures of the angles of any triangle is 180 degrees, we find the degree measure of the third angle of the triangle. To do this, subtract 50 degrees from 180 degrees. 2) 180 – 50 = 30 degrees – the degree measure of the third angle in the triangle. Answer: 30 degrees.