One of the angles of the triangle is 72, the other angle is 2 times less than it. Find the corners of this triangle.

One of the angles of the triangle is 72, the other angle is 2 times less than it. Find the corners of this triangle. What will this triangle be like?

first, we find the second angle, which is 2 times less than the first:
72: 2 = 36 degrees
the sum of all the angles of a triangle is 180 degrees. find the third corner
180 – 72 – 36 = 72 degrees
all angles are between 0 and 90 degrees (acute angles), hence the triangle is acute-angled. also his two angles are equal (72 degrees), i.e. this triangle is also isosceles.