Find the acute corners of a right triangle if the outer angle at the base of the isosceles triangle is 140 degrees.

Find the acute corners of a right triangle if the outer angle at the base of the isosceles triangle is 140 degrees. find the corners of the triangle.

The outer and inner angles adjacent to it add up to 180 degrees => Measure of one acute angle = 180-140 = 40 Sum of measures of acute angles of a right-angled triangle = 90 => Measure of the second acute angle = 90-40 = 50 The third angle is a straight line.
Answer: 40, 50 and 90.